| Keuffel and Esser |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Jul-2008 |
| 1900 Keuffel&Esser Ivory and Wood Slide Rule W | $740.00 | 21-Jul-2008 | 10 |
| VINTAGE K & E KEUFFEL & ESSER SLIDE RULE 68-14 | $362.77 | 13-Jul-2008 | 7 |
| K & E Thacher Calculator slide rule reproducti | $355.00 | 20-Jul-2008 | 5 |
| K & E Thacher Calculator slide rule reproducti | $199.99 | 14-Jul-2008 | 2 |
| K&E Decilon Slide Rule | $177.50 | 11-Jul-2008 | 12 |
| K&E slide rule - Duplex Log Log Decitrig - Mod | $170.00 | 01-Jul-2008 | 24 |
| Vintage K&E 68-1130 Deci-Lon 5 Slide Rule Keuf | $160.27 | 22-Jul-2008 | 12 |
| K & E Decilon Slide Rule In Box - Never Used | $153.50 | 11-Jul-2008 | 15 |
| Vintage Keuffel & Esser 68 1130 Deci-Lon Slide | $149.99 | 28-Jul-2008 | 1 |
| VINTAGE K&E 68-1130 DECI-LON 5-SLIDE RULE & CA | $149.95 | 04-Jul-2008 | 1 |
| K & E Deci-Lon 68 1130 Slide Rule & Case Good | $147.88 | 16-Jul-2008 | 14 |
| "7 Ft 1940,50's Polyphase Keuffel and Esser Sl | $140.01 | 20-Jul-2008 | 3 |
| K&E 20in Stadia Slide Rule/Case-Model N-4101 | $133.33 | 07-Jul-2008 | 5 |
| "Keuffel & Esser K+E Slide Rule 68-1100 Like N | $128.00 | 29-Jul-2008 | 16 |
| "K+E Decilon 10 68-1100 slide rule w/case, man | $125.00 | 04-Jul-2008 | 1 |
| "K+E Decilon 10 68-1100 slide rule w/case, man | $125.00 | 04-Jul-2008 | 1 |
| "K+E Decilon 10 68-1100 slide rule w/case, man | $125.00 | 26-Jul-2008 | 1 |
| K&E 4041F Slide Rule - Finely Divided - Rare E | $121.69 | 31-Jul-2008 | 1 |
| ORIGINAL Keuffel Esser 1913 Catalog Slide Rule | $117.50 | 18-Jul-2008 | 11 |
| K & E. Deci-Lon Slide Rule. 68 1100 | $109.50 | 24-Jul-2008 | 8 |
| "Keuffel & Esser 4081-5S Decitrig, 22"" Slide | $105.01 | 20-Jul-2008 | 10 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE 4083-3 | $102.50 | 03-Jul-2008 | 2 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE 4083-3 | $102.50 | 03-Jul-2008 | 2 |
| "20.5"" K+E POLYPHASE SLIDE RULE N4053-5+BX+CA | $102.50 | 06-Jul-2008 | 5 |
| K & E Deci-lon 10 Slide Rule with Case and Bel | $90.89 | 30-Jul-2008 | 19 |
| 1947 KEUFFEL ESSER. SLIDE RULE WITH LEATHER CA | $75.99 | 02-Jul-2008 | 22 |
| K&E 20in Stadia Slide Rule/Case-Model N-4101 | $75.00 | 04-Jul-2008 | 1 |
| vintage K & E Keuffel Esser 4041F Slide Rule n | $72.50 | 14-Jul-2008 | 16 |
| K+E Deci-lon 68-1100 & 4081-3 Slide Rule LOT | $72.50 | 25-Jul-2008 | 9 |
| K+E Deci-lon 68-1100 & 4081-3 Slide Rule LOT | $72.50 | 25-Jul-2008 | 9 |
| K&E 4181-1 Pocket Slide Rule with Case Keuffel | $71.00 | 27-Jul-2008 | 8 |
| "Vintage K&E Log Log Duplex Decitrig Slide Rul | $64.59 | 08-Jul-2008 | 8 |
| Keuffel & Esser K+E Slide Rule Deci-Lon 68-110 | $64.00 | 29-Jul-2008 | 14 |
| K & E Deci-Lon Slide Rule Model # 68-1100 & Ca | $62.16 | 29-Jul-2008 | 8 |
| K & E Deci-Lon Slide Rule Model # 68-1100 & Ca | $62.16 | 29-Jul-2008 | 8 |
| K&E slide rule desk set - K-12 Prep - Model 68 | $60.00 | 03-Jul-2008 | 1 |
| K&E slide rule desk set - K-12 Prep - Model 68 | $60.00 | 03-Jul-2008 | 1 |
| K+E JetLog Jr #4181-1 slide rule w/case + extr | $60.00 | 11-Jul-2008 | 1 |
| Keuffel Slide Rule 4088-5 Rosewood 22 inches l | $59.20 | 15-Jul-2008 | 4 |
| Keuffel & Esser Log Log Duplex Decitrig Slide | $57.00 | 13-Jul-2008 | 12 |
| K+E DECI-LON Slide Rule With Case | $53.99 | 11-Jul-2008 | 9 |
| Keuffel & Esser K & E Slide Rule Deci Lon 68 1 | $53.50 | 21-Jul-2008 | 2 |
| "K & E 4161-1 Vintage Pocket Slide Rule w/ Cas | $53.00 | 25-Jul-2008 | 8 |
| "K+E slide rule 4181-1 in sewed leather cs K&E | $52.01 | 07-Jul-2008 | 6 |
| 22 inch Keuffel Esser patent 1924 SLide Rule + | $51.01 | 20-Jul-2008 | 9 |
| K&E Keuffel Esser Log Duplex 68-1210 Slide Rul | $51.00 | 22-Jul-2008 | 7 |
| NOS VINTAGE KEUFFEL & ESSER CO. SLIDE RULE #40 | $49.60 | 09-Jul-2008 | 12 |
| K&E pocket slide rule ser 104425 copyright 194 | $49.50 | 28-Jul-2008 | 9 |
| Kueffel & Esser Pocket Slide Rule K&E K+E | $48.02 | 13-Jul-2008 | 8 |
| "K & E. 4088-5 20"" Slide Rule" | $46.67 | 24-Jul-2008 | 5 |
| K&E slide rule - Duplex Log Log Decitrig N9081 | $46.00 | 12-Jul-2008 | 11 |
| "K&E Bellville Spring Washer Computer, Slide R | $46.00 | 30-Jul-2008 | 6 |
| Vintage K+E POCKET SLIDE RULE with MANUAL & BO | $46.00 | 20-Jul-2008 | 10 |
| KEUFFEL & ESSER SLIDE RULE & PARAGON TRIANGULA | $43.00 | 08-Jul-2008 | 15 |
| KEUFFEL & ESSER DECI-LON slide rule book case | $42.23 | 08-Jul-2008 | 7 |
| Vintage K & E Keuffel Esser Slide Rule & Leath | $42.01 | 08-Jul-2008 | 10 |
| K & E Deci-Lon 68 1100 Slide Rule & Case Good | $41.01 | 23-Jul-2008 | 9 |
| K & E Deci-Lon Slide Rule Model # 68-1100 & Ca | $41.00 | 23-Jul-2008 | 11 |
| Keuffel & Esser Log Log Duplex Decitrig Slide | $41.00 | 31-Jul-2008 | 6 |
| K+E Deci-Lon Slide Rule | $39.99 | 15-Jul-2008 | 1 |
| *Keuffel & Esser Slide Rule~Case~Manuals~4081~ | $39.59 | 11-Jul-2008 | 8 |
| "Keuffel & Esser K+E Slide Rule 68-1251 Like N | $39.00 | 29-Jul-2008 | 9 |
| 2 VINTAGE SLIDE RULES K&E DIETZGEN ENGINEERING | $38.75 | 13-Jul-2008 | 12 |
| Lot Of Vintage Slide Rule K & E Keuffel Esser | $38.56 | 29-Jul-2008 | 5 |
| KEUFFEL & ESSER SLIDE RULE w/MANUAL/CASE/BOX K | $38.52 | 14-Jul-2008 | 6 |
| "Keuffel & Esser 4081-5S Decitrig, 22"" Slide | $36.99 | 14-Jul-2008 | 2 |
| K & E Decitrig Slide Rule 4081 & Manual Free S | $36.35 | 23-Jul-2008 | 7 |
| 1947 KEUFFEL ESSER CO. K&E DECITRIG SLIDE RULE | $36.00 | 03-Jul-2008 | 6 |
| 1947 KEUFFEL ESSER CO. K&E DECITRIG SLIDE RULE | $36.00 | 03-Jul-2008 | 6 |
| KUFFEL & ESSER LOG DECITRIG SLIDE RULE 4081-3- | $35.99 | 06-Jul-2008 | 7 |
| Vintage K & E Slide Ruler w/case - Mint | $35.00 | 09-Jul-2008 | 1 |
| Vintage Keuffel & Esser 68-1100 slide rule w/c | $34.65 | 31-Jul-2008 | 3 |
| Old Vintage K&E Slide Rule Ruler 4181-1 Keuffe | $34.25 | 20-Jul-2008 | 11 |
| ORIGINAL Keuffel Esser 1921 Catalog Slide Rule | $34.00 | 23-Jul-2008 | 4 |
| K & E LOG LOG Vector Slide Rule 4083-3 w/ Case | $33.64 | 13-Jul-2008 | 11 |
| K & E Ivorite Slide Rule Log Log Duplex Decitr | $33.09 | 25-Jul-2008 | 4 |
| "K & E Slide Rule 20 "" with Original K & E Ca | $33.00 | 20-Jul-2008 | 7 |
| "KEUFFEL & ESSER SLIDE RULE 68 1617, SEALED!, | $32.50 | 29-Jul-2008 | 6 |
| "KEUFFEL & ESSER SLIDE RULE 68 1617, SEALED!, | $32.50 | 29-Jul-2008 | 6 |
| VINTAGE K&E LOG LOG DUPLEX TRIG SLIDE RULE BOX | $32.24 | 13-Jul-2008 | 3 |
| VINTAGE 1960 KEUFFEL & ESSER N4053-3 SLIDE RUL | $32.21 | 20-Jul-2008 | 3 |
| K&E (Keuffel & Esser)Slide Rule Log Log Duplex | $32.00 | 30-Jul-2008 | 8 |
| K&E 20in Slide Rule/Case-Model N-4058 Cir 1909 | $31.00 | 13-Jul-2008 | 3 |
| Vintage K&E 4081-3 Slide Rule & Case 1947 KEUF | $31.00 | 08-Jul-2008 | 5 |
| VINTAGE Keuffel & Esser Slide Rule w/ Original | $31.00 | 30-Jul-2008 | 5 |
| K & E DECI-LON 10 SLIDE RULE MODEL 68-1100--NI | $30.99 | 28-Jul-2008 | 8 |
| Keuffel & Esser SLIDE RULE 4070-3 with CASE Ex | $30.79 | 28-Jul-2008 | 11 |
| 2 VINTAGE SLIDE RULES ACU MATH NO 1500 + KEUFF | $30.00 | 26-Jul-2008 | 7 |
| Vintage Keuffel & Esser 4081-3 Slide Rule Case | $30.00 | 20-Jul-2008 | 14 |
| K & E. Deci-Lon Slide Rule. 68 1100 | $29.95 | 18-Jul-2008 | 1 |
| SLIDE RULE ESSER KUEFFEL ENGINEERING DRAFTING | $29.00 | 18-Jul-2008 | 1 |
| Lot of 4 Slide Rules K&E 4058 Lawrence Acumath | $28.00 | 27-Jul-2008 | 6 |
| "Keuffel & Esser Co, Short Base Triangulation | $27.50 | 15-Jul-2008 | 3 |
| 1923 K&E 4088-3S Slide Rule with Case Keuffel | $27.00 | 27-Jul-2008 | 5 |
| KEUFFEL AND ESSER SLIDE RULE K&E MODEL 4081-3! | $26.75 | 13-Jul-2008 | 11 |
| 1924 K & E SLIDE RULE WITH SLIDING LENS & LEAT | $26.67 | 16-Jul-2008 | 2 |
| K & E Keuffel Esser Slide Rule manual Book Dec | $26.00 | 29-Jul-2008 | 12 |
| Vintage Keuffel & Esser Slide Rule 1948 N9081- | $26.00 | 08-Jul-2008 | 7 |
| K & E Keuffel Esser Slide Rule manual Book Dec | $26.00 | 29-Jul-2008 | 12 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE 4083-3 | $24.99 | 17-Jul-2008 | 1 |
| Vintage Keuffel & Esser Co. Slide Rule with Ca | $24.99 | 25-Jul-2008 | 1 |
| K&E slide rule 4080-3 Keuffel & Esser | $23.07 | 18-Jul-2008 | 6 |
| Slide Rule With Case Vintage Keuffel Esser Co. | $22.50 | 06-Jul-2008 | 16 |
| KEUFFEL ESSER SLIDE RULE W/ ORIGINAL BOX | $22.50 | 20-Jul-2008 | 5 |
| K & E K Mag 4092-3 Slide Rule | $22.48 | 24-Jul-2008 | 3 |
| "Old Slide Rule by Keuffel & Esser Co, NY- Jun | $22.00 | 02-Jul-2008 | 8 |
| 1954 KEUFFEL & ESSER SLIDE RULE w/ ORIG BOX BO | $21.99 | 13-Jul-2008 | 1 |
| Keuffel & Esser K + E N4081-3 Log Decitrig Sli | $21.50 | 13-Jul-2008 | 3 |
| Slide Rule Keuffel & Esser Model With Case | $21.01 | 21-Jul-2008 | 4 |
| 2)Vintage Keuffel Esser Slide Rule / Lawernce | $20.50 | 25-Jul-2008 | 5 |
| 2)Vintage Keuffel Esser Slide Rule / Lawernce | $20.50 | 25-Jul-2008 | 5 |
| "Vintage Slide Rule Drafting Scale K & E,Vemco | $20.50 | 31-Jul-2008 | 4 |
| 2)Vintage Keuffel Esser Slide Rule / Lawernce | $20.50 | 25-Jul-2008 | 5 |
| Old Keuffel & Esser WOODEN SLIDE RULE ©1928 Bo | $20.50 | 18-Jul-2008 | 4 |
| "Antique Keuffel & Esser Slide Rule,c1915,Case | $20.50 | 01-Jul-2008 | 6 |
| vintage 1962 K & E Keuffel Esser Slide Rule Ma | $20.49 | 13-Jul-2008 | 4 |
| N4081-3 K&E VINTAGE LOG LOG DUPLEX DECITRIG SL | $20.00 | 07-Jul-2008 | 1 |
| "collection of Vintage slide rules,Keuffel & E | $19.99 | 04-Jul-2008 | 1 |
| Keuffel & Esser K + E Slide Rule 4054 Pat.8/17 | $19.99 | 11-Jul-2008 | 1 |
| KEUFFEL & ESSER SLIDE RULE - MODEL 4081-3 -W/G | $19.99 | 04-Jul-2008 | 1 |
| Vintage KEUFFEL & ESSER CO NY SLIDE RULERS W C | $19.99 | 19-Jul-2008 | 2 |
| KEUFFEL & ESSER SLIDE RULE - MODEL 4081-3 -W/G | $19.99 | 04-Jul-2008 | 1 |
| Vintage Engineer N4081-3 Slide Rule Keuffel & | $19.99 | 16-Jul-2008 | 1 |
| Keuffel & Esser Co. NY 4053-3 Slide Rule Leath | $19.99 | 27-Jul-2008 | 1 |
| CD Keuffel Esser 1900 Catalog Slide Rules Tran | $19.99 | 16-Jul-2008 | 1 |
| "collection of Vintage slide rules,Keuffel & E | $19.99 | 04-Jul-2008 | 1 |
| CD Keuffel Esser 1900 Catalog Slide Rules Tran | $19.99 | 02-Jul-2008 | 1 |
| Vintage Keuffer & Esser Slide Rule | $19.95 | 22-Jul-2008 | 1 |
| EARLY 1900'S KEUFFEL AND ESSER CO. NY SLIDE RU | $18.00 | 21-Jul-2008 | 1 |
| KUEFFEL & ESSER 1947 4081-3 SRT SLIDE RULE | $17.99 | 11-Jul-2008 | 1 |
| 1967 K+E SLIDE RULE IVORITE MANNHEIM TYPE 68-1 | $17.50 | 24-Jul-2008 | 5 |
| KE Keuffel Esser Slide Rule Manual Book DeciLo | $17.00 | 25-Jul-2008 | 1 |
| Lot of 2 vintage Keuffel & Esser slide rules w | $16.75 | 13-Jul-2008 | 6 |
| VINTAGE K & E 4053-3 SLIDE RULE/LEATHER CASE-V | $16.29 | 05-Jul-2008 | 12 |
| Slide Rule K+E Model 4081-3 | $16.27 | 13-Jul-2008 | 2 |
| K&E 4053-3 POLYPHASE SLIDE RULE & CASE Pat. Da | $15.73 | 30-Jul-2008 | 2 |
| OLD K&E -- KEUFFEL & ESSER - SLIDE RULE New Yo | $15.51 | 20-Jul-2008 | 5 |
| VINTAGE 1947 K&E KEUFFEL & ESSER SLIDE RULE 40 | $15.50 | 03-Jul-2008 | 6 |
| Keuffel & Esser Model 4091-3 Slide Rule | $15.50 | 08-Jul-2008 | 3 |
| K+E POLYPHASE SLIDE RULE # 68 2063 COMPLETE IN | $15.50 | 28-Jul-2008 | 6 |
| K & E Slide Rules (2) & Manual Lot Nice No Res | $15.50 | 27-Jul-2008 | 4 |
| Vintage 1938 Keuffel & Esser 4056 Mahogany Sli | $15.50 | 16-Jul-2008 | 2 |
| K+E LOG LOG DUPLEX VECTOR SLIDE RULE MANUAL | $15.50 | 19-Jul-2008 | 4 |
| 2 X Keuffel & Esser Slide Rule wt Cases & Book | $15.50 | 08-Jul-2008 | 2 |
| VINTAGE 1947 K&E KEUFFEL & ESSER SLIDE RULE 40 | $15.50 | 03-Jul-2008 | 6 |
| K+E slide rule 4081-3 in sewed leather cs K&E | $15.00 | 03-Jul-2008 | 6 |
| K & E. 4081-3 Slide Rule & Case | $15.00 | 12-Jul-2008 | 1 |
| K+E slide rule 4081-3 in sewed leather cs K&E | $15.00 | 03-Jul-2008 | 6 |
| Vintage 1947 Keuffel & Esser K&E Slide Rule #4 | $15.00 | 27-Jul-2008 | 1 |
| K & E K Mag 4092-3 Slide Rule | $15.00 | 18-Jul-2008 | 1 |
| 2 VINTAGE SLIDE RULES ACU MATH NO 1500 + KEUFF | $14.99 | 22-Jul-2008 | 1 |
| Keuffel Esser Log Log Duplex Decitrig Slide Ru | $14.77 | 14-Jul-2008 | 4 |
| 1928 Keuffel Esser Slide Rule Beginners 4058 W | $13.49 | 19-Jul-2008 | 4 |
| Keuffel & Esser Slide Rule 1947 Log Duplex Dec | $13.07 | 18-Jul-2008 | 2 |
| VINTAGE Keuffel & Esser Slide Rule-4081-3-IN C | $12.99 | 10-Jul-2008 | 1 |
| Slide Rule Keuffel & Esser Log Duplex Decitrig | $12.56 | 20-Jul-2008 | 2 |
| "1936 K&E Slide Rule #4097C w/Box, Case & Inst | $12.50 | 30-Jul-2008 | 2 |
| "K AND E SLIDE RULE, KEUFFEL ESSER WITH BOX AN | $12.50 | 27-Jul-2008 | 2 |
| VINTAGE KUEFFEL & ESSER DUPLEX DECITRIG SLIDE | $12.50 | 03-Jul-2008 | 2 |
| VINTAGE KUEFFEL & ESSER DUPLEX DECITRIG SLIDE | $12.50 | 03-Jul-2008 | 2 |
| "Keuffel & Esser K&E 4070-3 slide rule, case" | $12.50 | 20-Jul-2008 | 3 |
| Antique Keuffel & Esser Co N.Y. Slide-Rule Rul | $12.50 | 29-Jul-2008 | 10 |
| CLEAN KEUFFEL & ESSER 12 INCH SLIDE RULE 4088- | $12.00 | 13-Jul-2008 | 3 |
| K+E slide rule 4080-3 in sewed leather cs K&E | $12.00 | 01-Jul-2008 | 3 |
| Vintage Keuffel & Esser Slide Rule w/ Case & B | $11.50 | 09-Jul-2008 | 2 |
| Vintage K&E Kueffel&Esser Parallel & Slide Rul | $11.50 | 09-Jul-2008 | 3 |
| K&E slide rule and Upjohn hematograph 3pc in b | $11.50 | 13-Jul-2008 | 3 |
| K & E SLIDE RULE AND CASE VERY NICE | $11.49 | 06-Jul-2008 | 5 |
| Vintage 1961 Slide Rule Keuffel & Esser Case & | $11.12 | 09-Jul-2008 | 3 |
| KEUFFEL&ESSER SLIDE RULE&CASE #4070-3 | $11.01 | 28-Jul-2008 | 4 |
| 1935 K&E N4053-3 Polyphase Slide Rule Keuffel | $10.72 | 27-Jul-2008 | 6 |
| 4723 K & E 4081-3 Log Log Duplex Decitrig Slid | $10.70 | 02-Jul-2008 | 14 |
| Keuffel & Esser K & E Slide Rule 4053-3 149211 | $10.65 | 15-Jul-2008 | 2 |
| Keuffel & Esser Slide Rule with Leather Case 1 | $10.50 | 15-Jul-2008 | 2 |
| ANTIQUE SLIDE RULE KEUFFEL & ESSER CO. | $10.50 | 03-Jul-2008 | 2 |
| K&E SLIDE RULE WITH LEATHER CASE | $10.50 | 06-Jul-2008 | 3 |
| ANTIQUE SLIDE RULE KEUFFEL & ESSER CO. | $10.50 | 03-Jul-2008 | 2 |
| Keuffel & Esser CO NY Slide Rule w/ Box & Inst | $10.25 | 06-Jul-2008 | 8 |
| "Slide Rule, Polyphase & Book - Keuffel & Esse | $10.00 | 16-Jul-2008 | 1 |
| KEUFFEL & ESSER Slide Rule; Flexible Curve Rul | $9.99 | 29-Jul-2008 | 1 |
| Slide Rule K+E Model 4053-3 | $9.99 | 13-Jul-2008 | 1 |
| ANTIQUE 1920 K&E MANNHEIM SLIDE RULE COMPLETE | $9.99 | 28-Jul-2008 | 1 |
| VINTAGE KUEFFEL & ESSER 4081-3 SLIDE RULE WITH | $9.99 | 28-Jul-2008 | 1 |
| Vintage Keuffel & Esser SLIDE RULE with Leathe | $9.99 | 14-Jul-2008 | 1 |
| Vintage Keuffel & Esser 4080-3 Slide Rule w. C | $9.99 | 04-Jul-2008 | 3 |
| "KEUFFEL & ESSER slide rule- 20 scales, LEATHE | $9.99 | 13-Jul-2008 | 1 |
| VINTAGE K & E 4053-3 SLIDE RULE/LEATHER CASE-V | $9.99 | 02-Jul-2008 | 1 |
| Keuffel & Esser Co NY 1908 Slide Rule Ruler 40 | $9.99 | 13-Jul-2008 | 1 |
| VINTAGE K & E KEUFFEL ESSER SLIDE RULE MANUAL | $9.99 | 13-Jul-2008 | 1 |
| Keuffels & Esser Co. Slide Rule with Case #408 | $9.99 | 14-Jul-2008 | 1 |
| "Very Early Keuffel & Esser Polyphase Slide Ru | $9.99 | 26-Jul-2008 | 1 |
| "Very Early Keuffel & Esser Polyphase Slide Ru | $9.99 | 22-Jul-2008 | 1 |
| KEUFFEL ESSER SLIDE RULE W/ ORIGINAL BOX | $9.99 | 14-Jul-2008 | 1 |
| Vintage Keuffel & Esser Slide Rule With Leathe | $9.99 | 12-Jul-2008 | 1 |
| KEUFFEL & ESSER Slide Rule; Flexible Curve Rul | $9.99 | 29-Jul-2008 | 1 |
| K & E Keuffel & Esser Slide rule 4181-3 | $9.99 | 29-Jul-2008 | 1 |
| 22 inch Keuffel Esser patent 1924 SLide Rule + | $9.99 | 14-Jul-2008 | 2 |
| 1928 Antique KEUFFEL & ESSER SLIDE RULE w/BOX | $9.99 | 14-Jul-2008 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 1924 W/CASE | $9.99 | 02-Jul-2008 | 1 |
| ANTIQUE K & E CO.N.Y..SLIDE RULE W/CASE & GEN. | $9.99 | 09-Jul-2008 | 1 |
| 1925 KEUFFEL & ESSER Polyphase SLIDE RULE MANU | $9.99 | 06-Jul-2008 | 1 |
| K & E Deci-Lon Slide Rule Model # 68-1100 & Ca | $9.99 | 17-Jul-2008 | 4 |
| "K+E slide rule 4181-1 in sewed leather cs K&E | $9.99 | 04-Jul-2008 | 1 |
| "Lot of 3 Slide Rules- Diwa, Castell. Keuffel | $9.99 | 20-Jul-2008 | 1 |
| Vintage Keuffel & Esser 4080-3 Slide Rule w. C | $9.99 | 04-Jul-2008 | 3 |
| Teledyne Drafting Arm w/ Rumold & K&E Slide Ru | $9.99 | 31-Jul-2008 | 1 |
| 1947 VINTAGE KEUFFEL & ESSER SLIDE RULE MAHOGA | $9.99 | 13-Jul-2008 | 1 |
| Vtg 1930s Keuffel & Esser K&E Polyphase Slide | $9.95 | 17-Jul-2008 | 1 |
| K & E. Deci-Lon Slide Rule Manual | $9.95 | 24-Jul-2008 | 1 |
| Slide Rule With Case Vintage Keuffel Esser Co. | $9.95 | 04-Jul-2008 | 1 |
| 1944 & 1951 K + E Slide Rule and Lettering Ins | $9.95 | 06-Jul-2008 | 1 |
| K & E Slide Rule | $9.95 | 05-Jul-2008 | 1 |
| VINTAGE KEUFFEL & ESSER K&E ENGINEERING SLIDE | $9.95 | 09-Jul-2008 | 1 |
| K&E KEUFFEL & ESSER SLIDE RULE LOG LOG DECITRI | $9.88 | 14-Jul-2008 | 8 |
| KEUFFEL & ESSER SLIDE RULE DEC 1908 IN CASE | $9.50 | 19-Jul-2008 | 2 |
| Keuffel & Esser 4081-3 SLIDE RULE & Case 1947 | $9.40 | 25-Jul-2008 | 4 |
| Vintage K & E Mannheim #4053-3 Slide Rule With | $9.38 | 16-Jul-2008 | 4 |
| KEUFFEL & ESSER SLIDE RULE DEC 1908 IN CASE | $9.00 | 14-Jul-2008 | 1 |
| K&E Log duplex 4092-3 slide rule | $9.00 | 19-Jul-2008 | 1 |
| "1947 K&E KEUFFEL ESSER 4083-3 SLIDE RULE RULE | $9.00 | 27-Jul-2008 | 1 |
| Keuffel & Esser Slide Rule 4058 case & instruc | $8.15 | 27-Jul-2008 | 2 |
| Slide Rule & Case Vintage Keuffel & Esser | $7.99 | 06-Jul-2008 | 2 |
| K&E Beginner's Slide Rule N4058W w/ Case | $7.99 | 28-Jul-2008 | 1 |
| Vintage K+E Slide Rule in Leather Case | $7.99 | 12-Jul-2008 | 2 |
| K&E Old No. 7W No. 682176 Slide Rule Indicator | $7.51 | 31-Jul-2008 | 6 |
| OLD K & E KEUFFEL ESSER SLIDE RULE LOG LOG DUP | $7.49 | 01-Jul-2008 | 2 |
| Keuffel & Esser Vintage Sliderule - Model#4053 | $7.00 | 26-Jul-2008 | 1 |
| VINTAGE K & E 4181-3 SLIDE RULE/LEATHER CASE C | $6.99 | 12-Jul-2008 | 1 |
| Vintage Keuffel & Esser Wooden Slide Rule Rule | $6.99 | 26-Jul-2008 | 1 |
| Keuffel Esser Beginer's Slide Rule | $6.50 | 21-Jul-2008 | 6 |
| "K&E Manual Log Duplex Decitrig Slide Rule, Su | $6.25 | 06-Jul-2008 | 1 |
| Kueffel & Esser Slide Rule | $6.00 | 28-Jul-2008 | 5 |
| K & E Slides Rules and Calculating Instruments | $5.99 | 18-Jul-2008 | 1 |
| 1928 SLIDE RULE - KENFFEL & SONS | $5.99 | 16-Jul-2008 | 2 |
| "Keuffel & Esser K&E 4071-3 slide rule, case" | $5.99 | 20-Jul-2008 | 1 |
| "KEUFFEL & ESSER, K & E, ""FAVORITE"" # 4056, | $5.99 | 23-Jul-2008 | 1 |
| VINTAGE K & E SLIDE RULE w/ CASE | $5.50 | 26-Jul-2008 | 2 |
| "Vintage Keuffel & Esser No 4053-3S 10"" Slide | $5.50 | 11-Jul-2008 | 3 |
| Vintage Keuffel & Esseer Co. Slide Rule | $5.50 | 07-Jul-2008 | 2 |
| "KEUFFEL & ESSER SLIDE RULE MODEL 4088-3, CASE | $5.50 | 06-Jul-2008 | 4 |
| KEUFFEL & ESSER BEGINNERS SLIDE RULE N4058W W | $5.50 | 08-Jul-2008 | 2 |
| POLYPHASE DUPLEX SLIDE RULE KEUFFEL ESSER MANU | $5.00 | 06-Jul-2008 | 1 |
| VINTAGE K & E N4058W Beginner's SLIDE RULE W C | $5.00 | 27-Jul-2008 | 1 |
| VINTAGE SLIDE RULE MANUAL K & E LOG LOG DUPLEX | $5.00 | 19-Jul-2008 | 1 |
| K & E MANNHEIM & POLYPHASE SLIDE RULES COMPLET | $4.99 | 10-Jul-2008 | 1 |
| 1924 Keuffel & Esser Slide Rule Instruction Bo | $4.99 | 24-Jul-2008 | 1 |
| KEUFFEL & ESSER SLIDE RULE MANUAL NO. 4161 NR | $4.99 | 30-Jul-2008 | 1 |
| KEUFFEL & ESSER N4053-3 SLIDE RULE. PAT 5 JUNE | $4.99 | 13-Jul-2008 | 1 |
| VINTAGE K & E SLIDE RULE IN BOX PAT JUNE 1900 | $4.99 | 11-Jul-2008 | 2 |
| KEUFFEL & ESSER SLIDE RULE MANUAL NO. 4161 NR | $4.99 | 23-Jul-2008 | 1 |
| K&E MOHOGANY SLIDE RULE N-4053-3 LEATHER SN 72 | $4.99 | 03-Jul-2008 | 1 |
| KEUFFEL & ESSER N4053-3 SLIDE RULE. PAT 5 JUNE | $4.99 | 19-Jul-2008 | 1 |
| OLD K&E -- KEUFFEL & ESSER - SLIDE RULE New Yo | $4.99 | 20-Jul-2008 | 1 |
| K&E MOHOGANY SLIDE RULE N-4053-3 LEATHER SN 72 | $4.99 | 03-Jul-2008 | 1 |
| ERROR PROOF BEGINNERS SLIDE RULE KEUFFEL & ESS | $4.95 | 25-Jul-2008 | 1 |
| Keuffel & Esser BEGINNERS Slide Rule VINTAGE w | $4.95 | 28-Jul-2008 | 1 |
| ::: Vintage K&E Keuffel & Esser N4058W SLIDE R | $4.95 | 27-Jul-2008 | 1 |
| Keuffel & Esser Slide Rule Model 4080-3 w leat | $4.82 | 13-Jul-2008 | 2 |
| Vintage K & E Slide Rule Manual Log Log Dpx De | $4.26 | 20-Jul-2008 | 2 |
| KEUFFEL & ESSER Co. NY Vintage SLIDE RULE with | $3.50 | 28-Jul-2008 | 1 |
| K+E LOG LOG DUPLEX DECITRIG SLIDE RULE MANUAL | $3.32 | 19-Jul-2008 | 2 |
| Vintage Keuffel & Esser 4081-3S Slide Rule wit | $3.15 | 30-Jul-2008 | 2 |
| Vintage Slide Rule Keuffel Esser Manual LL Dec | $3.00 | 20-Jul-2008 | 1 |
| Keuffel & Esser Co. Catalog Drafting Slide Rul | $2.99 | 29-Jul-2008 | 1 |
| Antique 1928 KEUFFEL & ESSER Slide Rule Ruler | $2.25 | 29-Jul-2008 | 2 |
| RARE Keuffel & Esser E4070-3 Wood Slide Rule & | $1.25 | 14-Jul-2008 | 2 |
| Keuffel & Esser Co. Slide Rule Manual | $0.99 | 08-Jul-2008 | 1 |
| VIN. SUN HEMMI K&E BAMBOO SLIDE RULE NO.1452W | $0.99 | 20-Jul-2008 | 1 |
| Near Mint K&E 4058W Beginners Slide Rule & 192 | $0.99 | 06-Jul-2008 | 1 |
| "Vintage Slide Rule ""Keuffel & Esser Co. No. | $0.99 | 10-Jul-2008 | 1 |
| Keuffel & Esser CO NY Slide Rule w/ Box & Inst | $0.99 | 02-Jul-2008 | 1 |
| K+E LOG LOG DUPLEX DECITRIG SLIDE RULE MANUAL | $0.99 | 19-Jul-2008 | 1 |
| "Antique K&E Slide Rule Model N4053-3 10"" Ver | $350.00 | 03-Jul-2008 | 0 |
| "Antique K&E Slide Rule Model N4053-3 10"" Ver | $350.00 | 07-Jul-2008 | 0 |
| Vintage Keuffel & Esser 68 1130 Deci-Lon Slide | $249.99 | 10-Jul-2008 | 0 |
| Vintage Keuffel & Esser 68 1130 Deci-Lon Slide | $199.99 | 20-Jul-2008 | 0 |
| Vintage Keuffel & Esser 68 1130 Deci-Lon Slide | $199.99 | 14-Jul-2008 | 0 |
| Vintage WWII Graphical Firing Table K E Slide | $189.00 | 04-Jul-2008 | 0 |
| Vintage WWII Graphical Firing Table K E Slide | $189.00 | 04-Jul-2008 | 0 |
| Big Slide Rule Slidedisk Emil Tröger Circular | $139.00 | 17-Jul-2008 | 0 |
| VINTAGE KEUFFEL & ESSER CO. K E SLIDE RULERS a | $125.00 | 30-Jul-2008 | 0 |
| VINTAGE KEUFFEL & ESSER CO. K E SLIDE RULERS a | $125.00 | 04-Jul-2008 | 0 |
| K&E 20 inch Polyphase Slide Rule N4053-5 Keuff | $74.99 | 07-Jul-2008 | 0 |
| K&E 20 inch Polyphase Slide Rule N4053-5 Keuff | $74.99 | 04-Jul-2008 | 0 |
| K+E Log Log Duplex Decitrig Ivorite Slide Rule | $50.00 | 06-Jul-2008 | 0 |
| "20.5"" K+E POLYPHASE SLIDE RULE N4053-5+BX+CA | $49.00 | 04-Jul-2008 | 0 |
| K&E 4088-2 Slide Rule w/Correct Case-8in Model | $35.00 | 04-Jul-2008 | 0 |
| K&E 4088-2 Slide Rule w/Correct Case-8in Model | $35.00 | 07-Jul-2008 | 0 |
| KEUFFEL & ESSER CO. OF NY SLIDE RULE | $32.99 | 01-Jul-2008 | 0 |
| vintage K&E slide rule polyphase duplex | $28.99 | 17-Jul-2008 | 0 |
| vintage K&E slide rule polyphase duplex | $28.99 | 23-Jul-2008 | 0 |
| LOT 6 SLIDE RULES KEUFFEL ESSER MORE 3 LEATHER | $24.99 | 20-Jul-2008 | 0 |
| 1934 Keuffel & Esser #4056 Sliderule Great PX | $24.99 | 06-Jul-2008 | 0 |
| 1934 Keuffel & Esser #4056 Sliderule Great PX | $24.99 | 04-Jul-2008 | 0 |
| Vintage 1947 Keuffel & Esser K&E Slide Rule #4 | $24.99 | 20-Jul-2008 | 0 |
| LOT 6 SLIDE RULES KEUFFEL ESSER MORE 3 LEATHER | $24.99 | 17-Jul-2008 | 0 |
| Vintage K&E 4081-3 DUPLEX SLIDE RULE in Case | $24.95 | 28-Jul-2008 | 0 |
| Keuffel & Esser K + E N4081-3 Log Decitrig Sli | $19.99 | 02-Jul-2008 | 0 |
| Vintage KEUFFEL & ESSER CO NY SLIDE RULERS W C | $19.99 | 12-Jul-2008 | 0 |
| CD Keuffel Esser 1900 Catalog Slide Rules Tran | $19.99 | 09-Jul-2008 | 0 |
| Keuffel & Esser K + E Slide Rule 4054 Pat.8/17 | $19.99 | 02-Jul-2008 | 0 |
| Vintage KEUFFEL & ESSER CO NY SLIDE RULERS W C | $19.99 | 05-Jul-2008 | 0 |
| Keuffel & Esser K + E Slide Rule 4054 Pat.8/17 | $19.99 | 05-Jul-2008 | 0 |
| LOT 6 SLIDE RULES KEUFFEL ESSER MORE 3 LEATHER | $19.99 | 28-Jul-2008 | 0 |
| RARE VNTGE POLYPHASE KEUFFEL & ESSER SLIDE RUL | $19.99 | 27-Jul-2008 | 0 |
| KUFFEL & ESSER LOG DECITRIG SLIDE RULE 4081-3- | $19.99 | 03-Jul-2008 | 0 |
| CD Keuffel Esser 1900 Catalog Slide Rules Tran | $19.99 | 23-Jul-2008 | 0 |
| Keuffel & Esser K + E N4081-3 Log Decitrig Sli | $19.99 | 06-Jul-2008 | 0 |
| "Keuffel + Esser Decitrig N4081-3. 12"" Slide | $19.99 | 30-Jul-2008 | 0 |
| RARE VINTAGE EST KEUFFEL & ESSER SLIDE RULE 40 | $19.99 | 27-Jul-2008 | 0 |
| CD Keuffel Esser 1900 Catalog Slide Rules Tran | $19.99 | 17-Jul-2008 | 0 |
| Vintage Keuffell & Esser K&E Slide Rule 1909? | $19.99 | 30-Jul-2008 | 0 |
| K & E Slide Rule Marked LUTZ | $19.95 | 12-Jul-2008 | 0 |
| K & E K Mag 4092-3 Slide Rule | $19.95 | 12-Jul-2008 | 0 |
| "K & E. 4088-5 20"" Slide Rule" | $19.95 | 18-Jul-2008 | 0 |
| K&E Keuffel Esser Log Duplex 68-1210 Slide Rul | $17.95 | 17-Jul-2008 | 0 |
| K & E Slide Rule Marked LUTZ | $15.00 | 18-Jul-2008 | 0 |
| K & E Slide Rule Marked LUTZ | $15.00 | 24-Jul-2008 | 0 |
| Keuffel & Esser Log Log Duplex Decitrig Slide | $14.99 | 30-Jul-2008 | 0 |
| Keuffel & Esser Log Log Duplex Decitrig Slide | $14.99 | 24-Jul-2008 | 0 |
| Beginners Slide Rule Keuffel & Esser USA N 405 | $11.22 | 27-Jul-2008 | 0 |
| Slide Rule vintage Keuffel & Esser | $10.00 | 04-Jul-2008 | 0 |
| Slide Rule Keuffel & Esser 1928 . 4058W WW2 er | $10.00 | 19-Jul-2008 | 0 |
| Slide Rule vintage Keuffel & Esser | $10.00 | 06-Jul-2008 | 0 |
| K & E Slide Ruler w/case - Rare Mannheim Type | $10.00 | 05-Jul-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 23-Jul-2008 | 0 |
| Vintage Keuffel & Esser Slide Rule With Leathe | $9.99 | 02-Jul-2008 | 0 |
| Slide Rule K+E 4088-3 | $9.99 | 19-Jul-2008 | 0 |
| VINTAGE K&E KEUFFEL & ESSER N4053-3 SLIDE RULE | $9.99 | 05-Jul-2008 | 0 |
| KUEFFEL & ESSER SLIDE RULE VINTAGE N4053 NO RE | $9.99 | 24-Jul-2008 | 0 |
| VINTAGE 4088-3 4056-3 KEUFFEL & ESSER SLIDE RU | $9.99 | 05-Jul-2008 | 0 |
| CD Keuffel Esser 1913 Catalog Slide rule trans | $9.99 | 05-Jul-2008 | 0 |
| 1939 KEUFFEL & ESSER CO SLIDE RULE NO. 4080 MA | $9.99 | 25-Jul-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 09-Jul-2008 | 0 |
| Slide Rule K+E Model 4041 | $9.99 | 20-Jul-2008 | 0 |
| "Log Duplex Slide Ruler, Keuffel and Esser Co" | $9.99 | 02-Jul-2008 | 0 |
| vintage keuffel & Esser slide rule #4080-03 NI | $9.99 | 03-Jul-2008 | 0 |
| VINTAGE K&E KEUFFEL & ESSER N4053-3 SLIDE RULE | $9.99 | 04-Jul-2008 | 0 |
| VINTAGE KEUFFEL SLIDE RULER WITH BOX | $9.99 | 06-Jul-2008 | 0 |
| K & E POLYPHASE SLIDE RULE RULER W/ LEATHER CA | $9.99 | 20-Jul-2008 | 0 |
| VINTAGE K & E KEUFFEL ESSER SLIDE RULE MANUAL | $9.99 | 03-Jul-2008 | 0 |
| vintage K & E 4088-3 slide rule with case NICE | $9.99 | 03-Jul-2008 | 0 |
| vintage keuffel & Esser slide rule #4080-03 NI | $9.99 | 03-Jul-2008 | 0 |
| VINTAGE K & E N4058W Beginner's SLIDE RULE W C | $9.99 | 20-Jul-2008 | 0 |
| vintage K & E 4088-3 slide rule with case NICE | $9.99 | 03-Jul-2008 | 0 |
| K & E POST CO. No.1447 Bamboo Sun Japan Slide | $9.99 | 27-Jul-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 02-Jul-2008 | 0 |
| CD Keuffel Esser 1913 Catalog Slide rule trans | $9.99 | 16-Jul-2008 | 0 |
| K + E Slide Rule N4081-3 with leather case | $9.99 | 01-Jul-2008 | 0 |
| 2 Keuffel & Esser slide rules and case KE N405 | $9.99 | 29-Jul-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 16-Jul-2008 | 0 |
| Antique SLIDE RULE Marked Keuffel & Esser Co. | $9.99 | 28-Jul-2008 | 0 |
| VINTAGE 4088-3 4056-3 KEUFFEL & ESSER SLIDE RU | $9.99 | 03-Jul-2008 | 0 |
| VIN. SUN HEMMI K&E BAMBOO SLIDE RULE NO.1452W | $9.99 | 11-Jul-2008 | 0 |
| Keuffel & Esser Model 4053-3 Slide Rule | $9.99 | 29-Jul-2008 | 0 |
| CD Keuffel Esser 1913 Catalog Slide rule trans | $9.99 | 04-Jul-2008 | 0 |
| 2 Keuffel & Esser slide rules and case KE N405 | $9.99 | 29-Jul-2008 | 0 |
| Vintage Keuffel & Esser Co. NY Slide Rule Rule | $9.99 | 30-Jul-2008 | 0 |
| Vintage Keuffel & Esser Co. Slide Rule K&E 409 | $9.99 | 12-Jul-2008 | 0 |
| VINTAGE K & E KEUFFEL ESSER SLIDE RULE MANUAL | $9.99 | 03-Jul-2008 | 0 |
| VINTAGE KEUFFEL SLIDE RULER WITH BOX | $9.99 | 04-Jul-2008 | 0 |
| Vintage Keuffel & Esser Co. NY Slide Rule Rule | $9.99 | 02-Jul-2008 | 0 |
| KUEFFEL & ESSER SLIDE RULE VINTAGE N4053 NO RE | $9.99 | 30-Jul-2008 | 0 |
| KUEFFEL & ESSER SLIDE RULE VINTAGE N4053 NO RE | $9.99 | 23-Jul-2008 | 0 |
| "Keuffel + Esser, Beginner's Slide Rule 4058W" | $9.99 | 30-Jul-2008 | 0 |
| KEUFFEL & ESSER POLYPHASE SLIDE RULE N4053 MAN | $9.99 | 13-Jul-2008 | 0 |
| 1947 Keuffel & Esser Co. Slide Rule Manual | $9.99 | 08-Jul-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 30-Jul-2008 | 0 |
| Vintge Keuffel & Esser Co. Slide Rule with Cas | $9.99 | 01-Jul-2008 | 0 |
| Vintge Keuffel & Esser Co. Slide Rule with Cas | $9.99 | 05-Jul-2008 | 0 |
| 1925 KEUFFEL & ESSER Polyphase SLIDE RULE MANU | $9.99 | 02-Jul-2008 | 0 |
| VINTAGE K & E N4058W Beginner's SLIDE RULE W C | $9.99 | 13-Jul-2008 | 0 |
| Vintage Keuffel & Esser slide rule with leathe | $9.95 | 06-Jul-2008 | 0 |
| KEUFFEL & ESSER SLIDE RULE AND CASE | $9.95 | 02-Jul-2008 | 0 |
| Vtg 1930s Keuffel & Esser K&E Polyphase Slide | $9.95 | 08-Jul-2008 | 0 |
| K & E Slide Rule | $9.95 | 03-Jul-2008 | 0 |
| Vintage Keuffel & Esser slide rule with leathe | $9.95 | 04-Jul-2008 | 0 |
| KEUFFEL & ESSER SLIDE RULE AND CASE | $9.95 | 05-Jul-2008 | 0 |
| Keuffel & Esser co. Slide rule in leather Shea | $9.95 | 27-Jul-2008 | 0 |
| K & E. Deci-Lon Slide Rule Manual | $9.95 | 18-Jul-2008 | 0 |
| KEUFFEL AND ESSER Co. SLIDE RULER / VENUS 10 P | $9.80 | 01-Jul-2008 | 0 |
| KEUFFEL AND ESSER Co. SLIDE RULER / VENUS 10 P | $9.80 | 30-Jul-2008 | 0 |
| Keuffel & Esser no 4058W slide rule for beginn | $8.99 | 27-Jul-2008 | 0 |
| K&E SLIDE RULE WITH LEATHER CASE | $8.95 | 03-Jul-2008 | 0 |
| K & E- - Keuffel & Esser POLYPHASE SLIDE RULE | $8.50 | 13-Jul-2008 | 0 |
| Keuffel & Esser K&E Sliderule Slide Rule 1947 | $7.99 | 08-Jul-2008 | 0 |
| KEUFFEL ESSER SLIDE RULE VINTAGE 4058 W BEGINN | $7.99 | 17-Jul-2008 | 0 |
| KEUFFEL ESSER SLIDE RULE VINTAGE 4058 W BEGINN | $7.99 | 23-Jul-2008 | 0 |
| KEUFFEL & ESSER SLIDE RULE MANUAL NO. 4161 & C | $6.99 | 02-Jul-2008 | 0 |
| KEUFFER & ESSER Co 1964 Slide Rules Sales Broc | $6.99 | 07-Jul-2008 | 0 |
| KEUFFEL & ESSER SLIDE RULE MANUAL NO. 4161 & C | $6.99 | 06-Jul-2008 | 0 |
| KEUFFER & ESSER Co 1964 Slide Rules Sales Broc | $6.99 | 01-Jul-2008 | 0 |
| Vintage Keuffel & Esser Wooden Slide Rule Rule | $6.99 | 26-Jul-2008 | 0 |
| KEUFFEL & ESSER SLIDE RULE MANUAL NO. 4161 NR | $6.99 | 20-Jul-2008 | 0 |
| "K&E Manual Log Duplex Decitrig Slide Rule, Su | $6.25 | 02-Jul-2008 | 0 |
| 1938 1944 Keuffel & Esser Polyphase Slide Rule | $6.00 | 13-Jul-2008 | 0 |
| 1938 Keuffel & Esser Mannheim Slide Ruler Manu | $6.00 | 13-Jul-2008 | 0 |
| vintage SLIDE RULE K&E 4081-3 ... 961888 with | $6.00 | 09-Jul-2008 | 0 |
| 1947 Keuffel & Esser Co. Slide Rule Manual | $5.99 | 21-Jul-2008 | 0 |
| Vintage Keuffel & Esser Co Slide Rule With Lea | $5.99 | 01-Jul-2008 | 0 |
| K&E Keuffel Esser 4081-3 Decitrig Slide Rule B | $5.00 | 01-Jul-2008 | 0 |
| POLYPHASE DUPLEX SLIDE RULE KEUFFEL ESSER MANU | $5.00 | 02-Jul-2008 | 0 |
| Vintage Keuffel & Esseer Co. Slide Rule | $4.99 | 02-Jul-2008 | 0 |
| OLD K&E -- KEUFFEL & ESSER - SLIDE RULE New Yo | $4.99 | 14-Jul-2008 | 0 |
| Keuffel & Esser Slide Rule N4058W with case | $4.99 | 03-Jul-2008 | 0 |
| Polyphase Duplex Slide Rule Keuffel Booklet | $4.99 | 04-Jul-2008 | 0 |
| Keuffel & Esser Slide Rule N4058W with case | $4.99 | 03-Jul-2008 | 0 |
| Polyphase Duplex Slide Rule Keuffel Booklet | $4.99 | 06-Jul-2008 | 0 |
| Vintage 1924 Keuffel & Esser #4092-3 Slide Rul | $4.99 | 10-Jul-2008 | 0 |
| Keuffel Esser K & E Polyphase Slide Rule 1940' | $4.99 | 03-Jul-2008 | 0 |
| Vintage Kueffel & Esser Slide Rule Leather Cas | $4.99 | 13-Jul-2008 | 0 |
| VINTAGE 4088-3 4056-3 KEUFFEL & ESSER SLIDE RU | $4.99 | 14-Jul-2008 | 0 |
| OLD K&E -- KEUFFEL & ESSER - SLIDE RULE New Yo | $4.99 | 15-Jul-2008 | 0 |
| K&E Beginner's Slide Rule 4058W | $4.99 | 16-Jul-2008 | 0 |
| Keuffel Esser K & E Polyphase Slide Rule 1940' | $4.99 | 05-Jul-2008 | 0 |
| 1967 K+E SLIDE RULE IVORITE MANNHEIM TYPE 68-1 | $4.95 | 18-Jul-2008 | 0 |
| The Mannheim slide rule Breckenridge Keuffel E | $4.68 | 06-Jul-2008 | 0 |
| The Mannheim slide rule Breckenridge Keuffel E | $4.68 | 04-Jul-2008 | 0 |
| 1938 1944 Keuffel & Esser Polyphase Slide Rule | $4.00 | 27-Jul-2008 | 0 |
| 1938 Keuffel & Esser Mannheim Slide Ruler Manu | $4.00 | 27-Jul-2008 | 0 |
| K&E Keuffel Esser 4081-3 Decitrig Slide Rule B | $3.00 | 08-Jul-2008 | 0 |
| Keuffel & Esser Co. Slide rule manual # N4081 | $2.99 | 20-Jul-2008 | 0 |
| Keuffel & Esser Co. Slide rule manual # N4081 | $2.99 | 14-Jul-2008 | 0 |
| VINTAGE K & E 4081-5 LOG LOG DUPLEX DECITRIG S | $1.00 | 27-Jul-2008 | 0 |
| 1908 Keuffel & Esser Log Log Duplex Slide Rule | $0.99 | 24-Jul-2008 | 0 |
| Vintage Keuffel & Esser Slide Rule 1948 N9081- | $0.99 | 01-Jul-2008 | 0 |
| Keuffel & Esser Beginner's Slide Rule | $0.99 | 29-Jul-2008 | 0 |
| Keuffel & Esser Co. Decitrig Slide Rule Manual | $0.99 | 27-Jul-2008 | 0 |
| Keuffel & Esser Beginner's Slide Rule | $0.99 | 29-Jul-2008 | 0 |