| Keuffel and Esser |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Oct-2007 |
| "Keuffel & Esser Analon 681400 Slide Rule w/ C | $685.00 | 08-Oct-2007 | 14 |
| ANTIQUE KEUFFEL & ESSER IVORY SLIDE RULE - PAT | $635.85 | 11-Oct-2007 | 14 |
| ANTIQUE KEUFFEL & ESSER IVORY SLIDE RULE - PAT | $635.54 | 19-Oct-2007 | 17 |
| "KEUFFEL & ESSER CO, NY 10"" SLIDE RULE w/ CAS | $455.00 | 14-Oct-2007 | 5 |
| "K&E N4135 6"" slide rule" | $245.44 | 25-Oct-2007 | 7 |
| "Large 20"" K&E Merchants' Slide Rule w/ Case | $227.50 | 21-Oct-2007 | 3 |
| "22"" KEUFFEL+ESSER VECTOR SLIDE RULE #4083-5+ | $204.49 | 20-Oct-2007 | 12 |
| K&E LOG LOG DUPLEX DECITRIG 4081-5 1947 SLIDE | $195.50 | 10-Oct-2007 | 15 |
| "K + E DECI-LON SLIDE RULE, No. 68 1100, IN OR | $190.00 | 29-Oct-2007 | 12 |
| 4 KEUFFEL & ESSER DRAFTING TOOLS SLIDE RULE PE | $182.50 | 23-Oct-2007 | 16 |
| OLD KEUFFEL & ESSER K&E 4080-5 SLIDE RULE 22in | $152.50 | 07-Oct-2007 | 13 |
| "Keuffel & Esser Decilon 681100 Slide Rule w/ | $129.50 | 10-Oct-2007 | 14 |
| Keuffel & Esser Slide Rule (sliderule) w/leath | $125.00 | 23-Oct-2007 | 1 |
| K & E Deci - Lon Slide Rule | $121.87 | 07-Oct-2007 | 20 |
| Vintage K&E Slide Rule w/Case / Very Large Rul | $116.27 | 27-Oct-2007 | 7 |
| KEUFFEL & ESSER DECI-LON SLIDE RULE 68 1100-CA | $102.50 | 22-Oct-2007 | 1 |
| KEUFFEL ESSER K & E SLIDE RULE DECI-LON W/ CAS | $102.50 | 31-Oct-2007 | 15 |
| Keuffel & Esser Slide Rule (sliderule) w/leath | $100.00 | 27-Oct-2007 | 1 |
| RARE Mint 4093-3 Keuffel & Esser Co. NY Slide | $96.58 | 26-Oct-2007 | 1 |
| Vintage K&E Deci-Lon Slide Rule Keuffel & Esse | $90.99 | 29-Oct-2007 | 9 |
| DECI - LON 10 KEUFFEL & ESSER SLIDE RULE 68 10 | $89.00 | 13-Oct-2007 | 8 |
| Vintage KEUFFEL & ESSER Deci-Lon 68-1100 Slide | $89.00 | 14-Oct-2007 | 11 |
| Vintage Keuffel & Esser Co.Slide Rule w/ Leath | $88.22 | 27-Oct-2007 | 10 |
| Keuffel and Esser 68 1100 Deci-Lon slide rule- | $88.00 | 14-Oct-2007 | 15 |
| Keuffel &Esser Deci-Lon 10 Slide Rule | $88.00 | 06-Oct-2007 | 17 |
| Antique KEUFFEL & ESSER Elevation Difference S | $87.88 | 14-Oct-2007 | 10 |
| K&E Deci -Lon 10 Slide Rule 68-1100 w/case 194 | $79.00 | 21-Oct-2007 | 17 |
| K & E SLIDE RULE WITH LEATHER CASE 10 DECI-LON | $78.00 | 07-Oct-2007 | 7 |
| "Keuffel & Esser, Deci-Lon 68 1100, Slide Rule | $78.00 | 15-Oct-2007 | 4 |
| "Keuffel & Esser Co. K S Slide Rule 20"" {68 1 | $78.00 | 07-Oct-2007 | 9 |
| Orig RCE Engineer Military Slide Rule K & E St | $77.51 | 23-Oct-2007 | 4 |
| K&E Deci -Lon 10 Slide Rule 68-1100 w/case 194 | $76.51 | 16-Oct-2007 | 1 |
| KEUFFEL & ESSER DECI-LON 10 SLIDE RULE 68-1100 | $75.00 | 16-Oct-2007 | 16 |
| "K+E DECI-LON MODEL 68 1100 10"" SLIDE RULE+CA | $75.00 | 15-Oct-2007 | 1 |
| "22 ¼"" K&E 4080-5 SLIDE RULE W/ CASE" | $71.00 | 09-Oct-2007 | 5 |
| Keuffel & Esser 68 1210 Slide Rule - In Origin | $69.00 | 14-Oct-2007 | 3 |
| K & E Slide Rule Magnifier -- LARGE / Unusual! | $68.00 | 28-Oct-2007 | 10 |
| K & E Slide Rule and Dietzgen Drafting Tools | $65.00 | 31-Oct-2007 | 8 |
| 1921 KEUFFEL & ESSER CATALOG BOOK TRANSITS SLI | $64.79 | 14-Oct-2007 | 7 |
| K&E 1947 Log Log Duplex Decitrig Slide Rule 40 | $63.52 | 17-Oct-2007 | 3 |
| K&E 4181-3 Log Log Duplex Decitrig SLIDE RULE | $61.63 | 27-Oct-2007 | 6 |
| Keufffel & Esser Co. Slide Ruler Mint w/Box Ma | $56.99 | 28-Oct-2007 | 3 |
| Vintage 1944 K+E Instructors Slide Rule 7 ft l | $56.00 | 14-Oct-2007 | 7 |
| Keuffel & Esser Slide Rule ... 4090-3 ..Excell | $52.99 | 21-Oct-2007 | 8 |
| Vintage K&E Keuffel & Esser Slide Rule Box Boo | $52.77 | 29-Oct-2007 | 10 |
| KEUFFEL ESSER 1947 SLIDE RULE & DIETZGEN BEAM | $52.67 | 06-Oct-2007 | 9 |
| KEUFFEL & ESSER Vintage Slide Rule # 4181 with | $52.00 | 11-Oct-2007 | 11 |
| Vintage K & E Slide Rule W/Pouch | $51.00 | 16-Oct-2007 | 9 |
| Keuffel & Esser Vintage Slide Rule w/ Leather | $50.00 | 14-Oct-2007 | 1 |
| "L4149 K & E #4081-3 LOG-LOG SLIDE RULE, CASE | $50.00 | 06-Oct-2007 | 6 |
| K & E 68 1210 Log Log Duplex Decitrig Slide Ru | $47.00 | 24-Oct-2007 | 9 |
| "VINTAGE KEUFFEL & ESSER SLIDE RULE W/CASE,BOX | $47.00 | 25-Oct-2007 | 11 |
| K&E Slide Rule 4083-3S With Leather Case | $46.77 | 11-Oct-2007 | 5 |
| Large 7 Foot Keuffel & Esser K&E 4053-3 Slide | $46.36 | 11-Oct-2007 | 9 |
| K & E Pocket Slide Rule | $43.99 | 26-Oct-2007 | 13 |
| Keuffel & Esser Slide Rule No 8858 1942 War Ti | $43.20 | 09-Oct-2007 | 2 |
| K&E LEROY TEMPLATE PARAGON DIVIDERS POST SLIDE | $43.19 | 11-Oct-2007 | 7 |
| K&E 1947 LOG LOG DUPLEX DECITRIG Slide Rule 40 | $43.00 | 07-Oct-2007 | 4 |
| "K&E 4181 6"" slide rule" | $42.99 | 24-Oct-2007 | 6 |
| K&E LOG LOG DUPLEX DECITRIG SLIDE RULE W/MANUA | $42.99 | 21-Oct-2007 | 6 |
| VINTAGE KEUFFEL & ESSER NO.4088-3 SLIDE RULE & | $42.89 | 14-Oct-2007 | 4 |
| 1947 KEUFFEL & ESSER CO SLIDE RULE LEATHER CAS | $41.00 | 21-Oct-2007 | 6 |
| VINTAGE SLIDE RULE K&E ACCESSORY MAGINIFIER+IN | $39.92 | 08-Oct-2007 | 10 |
| US MILITARY SLIDE RULE W/ LEATHER CASE KEUFFEL | $39.89 | 15-Oct-2007 | 3 |
| "1949 K E SLIDE RULE # 4181-3 CASE, BOX, AND M | $39.00 | 14-Oct-2007 | 1 |
| "K&E N4080-3S LOG DUPLEX TRIG SLIDE RULE,LEATH | $38.50 | 15-Oct-2007 | 19 |
| "1947 Keuffel & Esser Decitrig Slide Rule-K-E- | $37.99 | 20-Oct-2007 | 6 |
| Vintage Keuffel & Esser N4081-5 Slide Rule W/C | $37.89 | 22-Oct-2007 | 8 |
| Vintage Slide Rule Keuffel & Esser w/Case Box | $36.60 | 18-Oct-2007 | 3 |
| K&E LOG LOG DUPLEX DECITRIG 1950S SLIDE RULE M | $36.00 | 28-Oct-2007 | 5 |
| "K&E N4081-3 Log Log Decitrig Slide Rule, Case | $36.00 | 18-Oct-2007 | 4 |
| K+E SLIDE RULE LOG LOG DUPLEX DECITRIG 1947 40 | $35.00 | 14-Oct-2007 | 6 |
| FINE K & E? Slide Rule Case -- OVERSIZED For M | $34.99 | 28-Oct-2007 | 6 |
| 1955 K&E Slide Rule Hardback Instruction Manua | $32.99 | 17-Oct-2007 | 8 |
| K+E Keuffel & Esser Deci-lon Decilon slide rul | $32.98 | 21-Oct-2007 | 8 |
| Vint K & E N4081-3 Log Log Duplex Decitrig Sli | $32.31 | 09-Oct-2007 | 3 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE # 4181-1 wi | $32.00 | 22-Oct-2007 | 10 |
| LOT of 5 VINTAGE SLIDE RULES + Extras ~ K & E | $32.00 | 07-Oct-2007 | 8 |
| Keuffel & Esser 4053-5 20-inch Slide Rule need | $31.00 | 13-Oct-2007 | 7 |
| Vintage 1947 Keuffel Esser Co Slide Rule w Pou | $31.00 | 23-Oct-2007 | 7 |
| "1947 Keuffel & Esser Decitrig Slide Rule-K-E- | $31.00 | 18-Oct-2007 | 5 |
| Vintage Keuffel & Esser Slide Rule In Case | $31.00 | 10-Oct-2007 | 9 |
| Vintage 7 Inch Slide Rule by Keuffel & Esser | $30.99 | 28-Oct-2007 | 12 |
| "VINTAGE K&E 6"" SLIDE RULE (SLIP STICK)" | $30.78 | 10-Oct-2007 | 7 |
| K&E 4081-3 slide rule | $30.00 | 23-Oct-2007 | 1 |
| Keuffel & Esser Model 4083-3 Slide Rule & Case | $30.00 | 17-Oct-2007 | 6 |
| Keuffel & Esser Slide Rule No. 68 2081 w/ Orig | $29.00 | 09-Oct-2007 | 5 |
| Vintage K & E SLIDE RULE 4181-3 w/ LEATHER CAS | $29.00 | 19-Oct-2007 | 4 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE MAGNIFIER 4 | $27.99 | 08-Oct-2007 | 6 |
| KEUFFEL AND ESSER 4181-1 SLIDE RULE AND CASE | $27.53 | 28-Oct-2007 | 6 |
| "Slide rule, Keuffel and Esser - 21 inch" | $27.50 | 14-Oct-2007 | 7 |
| Keuffel & Esser Slide Rule & Case Model # 68 1 | $26.77 | 30-Oct-2007 | 7 |
| Keuffel and Esser Slide Rule MIB N4081-3 | $26.00 | 15-Oct-2007 | 11 |
| KEUFFEL & ESSER 4081-3 Log Duplex Decitrig Sli | $26.00 | 06-Oct-2007 | 4 |
| 1962 K & E slide rule manual book DECI-LON w i | $26.00 | 23-Oct-2007 | 2 |
| Keuffel & Esser slide rule ruler 4080-3 w/orig | $26.00 | 23-Oct-2007 | 7 |
| K&E Keuffel & Esser Co. Slide Rule 4092-3 w/Ma | $26.00 | 13-Oct-2007 | 4 |
| Keuffel and Esser Slide Rule ...... 4081-3 | $26.00 | 29-Oct-2007 | 4 |
| Lot Vintage Slide Rule Books K & E log log dup | $26.00 | 15-Oct-2007 | 6 |
| K&E KEUFFEL SLIDE RULE DECI-LON MANUAL HC BOOK | $25.49 | 28-Oct-2007 | 5 |
| Keuffel & Esser Slide Rule | $25.00 | 09-Oct-2007 | 1 |
| Slide Rule Lot= 14 K&E Parisian Dietzgen Sun H | $24.99 | 10-Oct-2007 | 1 |
| "Keuffel & Esser Catalog, 1936: Slide Rules, T | $24.74 | 26-Oct-2007 | 6 |
| Keuffel & Esser slide rule | $23.76 | 23-Oct-2007 | 10 |
| Keuffel & Esser K&E Slide Rule with Leather Ca | $23.50 | 29-Oct-2007 | 7 |
| Keuffel & Esser Co. Vintage Slide Rule #N4053- | $23.00 | 28-Oct-2007 | 1 |
| Keuffel & Esser Co 4083-3 slide ruler & books | $22.54 | 14-Oct-2007 | 5 |
| "Antique ""K & E"" Slide Rule with Leather Cas | $22.50 | 14-Oct-2007 | 4 |
| 1947 Vintage Keuffel & Esser N4081-3 SLIDE RUL | $22.50 | 23-Oct-2007 | 11 |
| K & E Slide Rule Model 4071-3.NR. | $22.49 | 29-Oct-2007 | 4 |
| KEUFFEL & ESSER Slide Rule 4080-3 K&E W/Leathe | $22.27 | 21-Oct-2007 | 5 |
| Slide Rule -Kueffel & Esser Co. N.Y. | $22.27 | 29-Oct-2007 | 2 |
| KEUFFEL & ESSER K & E SLIDE RULE 4083-3 W/CASE | $21.71 | 28-Oct-2007 | 4 |
| K & E Log Log Duplex Decitrig 4081-3 Slide Rul | $20.50 | 12-Oct-2007 | 1 |
| VINTAGE KEUFFEL & ESSER WOOD SLIDE RULE W/CASE | $20.50 | 24-Oct-2007 | 4 |
| Keuffel & Esser Co. K S Slide Rule 4181-3 Nice | $20.40 | 07-Oct-2007 | 5 |
| Vintage Keuffel & Esser Slide Rule + B.K. Elli | $20.00 | 28-Oct-2007 | 1 |
| Nice Vintage Keuffel & Esser Slide Rule in Lea | $20.00 | 06-Oct-2007 | 11 |
| 2 KEUFFEL & ESSER SLIDE RULE 4058W BEGINNER'S | $20.00 | 31-Oct-2007 | 1 |
| KEUFFEL & ESSER SLIDE RULE No 68 1251 w/ ORIGI | $19.99 | 15-Oct-2007 | 1 |
| "Keuffek & Esser Co, Slide Rule with hard case | $19.99 | 27-Oct-2007 | 1 |
| 1947 Keuffel & Esser Slide Rule &Case Eddie Eh | $19.95 | 17-Oct-2007 | 1 |
| K&E Slide Rule with Instruction Book | $19.89 | 20-Oct-2007 | 5 |
| K&E 4081-3 LOG DUPLEX DECITRIG SLIDE RULE W/CA | $18.60 | 07-Oct-2007 | 3 |
| ANTIQUE KEUFFEL & ESSER 4058C SLIDE RULE BOX & | $18.50 | 20-Oct-2007 | 5 |
| "K+E KEUFFEL & ESSER 4081-3 SLIDE RULE, INST & | $17.99 | 21-Oct-2007 | 1 |
| Vintage KEUFFEL & ESSER K & E 4161-1 Slide RUL | $17.50 | 17-Oct-2007 | 5 |
| 1947 KEUFFLER & ESSER SLIDE RULE WITH CASE. FI | $17.50 | 14-Oct-2007 | 3 |
| RARE K & and E Keuffel Esser Slide Rule + Pick | $17.17 | 22-Oct-2007 | 2 |
| K&E #4161-3 student slide rule | $17.02 | 29-Oct-2007 | 3 |
| "Keuffel & Esser Slide Rules Book, Deci-Lon 19 | $16.99 | 28-Oct-2007 | 1 |
| K & E Slide Rules- Deci-lon: An Instruction Ma | $16.63 | 17-Oct-2007 | 9 |
| KEUFFEL & ESSER DORIC 68155 SHORT SLIDE RULE W | $16.50 | 24-Oct-2007 | 5 |
| Vintage Desk Size Slide Rule Keuffel & Esser | $16.50 | 25-Oct-2007 | 7 |
| RARE VINTAGE ESTATE KEUFFEL & ESSER SLIDE RULE | $16.50 | 15-Oct-2007 | 4 |
| Early 20th Century Keuffel and Esser 4092 slid | $16.50 | 14-Oct-2007 | 4 |
| Keuffel Esser 4081-3 Log Log Duplex Decitrig s | $15.61 | 21-Oct-2007 | 4 |
| K&E 1210 Log Log Duplex Decitrig SLIDE RULE gr | $15.60 | 22-Oct-2007 | 1 |
| "1931 Instruction booklet SLIDE RULES, Keuffel | $15.50 | 29-Oct-2007 | 3 |
| 1947 K & E Keuffel & Esser SLIDE RULE w/Case N | $15.50 | 18-Oct-2007 | 4 |
| KEUFFEL & ESSER DORIC POLYPHASE DUPLEX POCKET | $15.50 | 29-Oct-2007 | 2 |
| 1950 K & E Keuffel & Esser Slide Rule Model #4 | $15.50 | 20-Oct-2007 | 5 |
| Keuffer & Esser K & E SLIDE RULE 4083-3 + Case | $15.50 | 07-Oct-2007 | 2 |
| 1947 Vintage Keuffel & Esser N4081-3 Slide Rul | $15.50 | 06-Oct-2007 | 8 |
| "Slide Rule: Keuffel & Esser, NY With Leather | $15.50 | 12-Oct-2007 | 9 |
| "KEUFFEL & ESSER 12"" SLIDE RULE #4070-3" | $15.50 | 09-Oct-2007 | 6 |
| Keuffel & Esser GP 12 Slide Rule c1964 K E | $15.25 | 26-Oct-2007 | 3 |
| Keuffel & Esser 4181-3 Slide Rule w/ Case~1947 | $15.00 | 22-Oct-2007 | 6 |
| 1900 Keuffel & Esser Co Slide Rule PolyPhase W | $15.00 | 14-Oct-2007 | 3 |
| K&E Keuffel & Esser SLIDE RULE 4081-3 with Cas | $15.00 | 25-Oct-2007 | 4 |
| Keuffel & Esser K&E 4081 Log Duplex Decitrig s | $14.99 | 08-Oct-2007 | 1 |
| Keuffel & Esser Slide Rule Mannheim Ivory 1900 | $14.99 | 24-Oct-2007 | 1 |
| Vintage Slide Rule Keuffel & Esser leather cas | $14.50 | 21-Oct-2007 | 2 |
| OLD KEUFFEL & ESSER CO 4058 WOOD STUDENT SLIDE | $14.50 | 21-Oct-2007 | 2 |
| Enamel Kueffel & Esser Slide Rule Kinney Co Ti | $14.39 | 21-Oct-2007 | 2 |
| K&E Slide Rule w/leather case | $14.01 | 22-Oct-2007 | 3 |
| "Vintage Keuffel & Esser 4071 Slide Rule, Case | $13.99 | 12-Oct-2007 | 1 |
| VINTAGE KEUFFEL & ESSER 4080-3 SLIDE RULE-LEAT | $13.99 | 29-Oct-2007 | 1 |
| '55 K&E Slide Rule Manual 126-Pages Log Duplex | $13.50 | 24-Oct-2007 | 4 |
| LOT 3 VINTAGE SLIDE RULES POST SUN HEMMI KEUFF | $13.49 | 14-Oct-2007 | 7 |
| K&E 4070-3 SLIDE RULE / with case | $13.27 | 22-Oct-2007 | 2 |
| VINTAGE KEUFFEL & ESSER NO.4081-3 SLIDE RULE & | $12.99 | 14-Oct-2007 | 1 |
| Keuffel & Esser Drafting Set W795 1/2 & Slide | $12.74 | 26-Oct-2007 | 2 |
| UNUSUAL KEUFFEL & ESSER SLIDE RULE K&E ENGINEE | $12.50 | 28-Oct-2007 | 2 |
| Vintage K & E Slide Rule w/ Case - Model 9068 | $12.50 | 21-Oct-2007 | 4 |
| Vintage K&E Slide Rule with Case | $12.50 | 21-Oct-2007 | 3 |
| Keuffel & Esser Co. Slide Ruler w/ Leather Cas | $12.50 | 25-Oct-2007 | 5 |
| K&E 68 1617 Slide Rule w/conversion factors | $12.50 | 23-Oct-2007 | 3 |
| LOT OF 5 KUEFFEL & ESSER SLIDE RULE AND SCALES | $12.50 | 22-Oct-2007 | 5 |
| Keuffel and Essler 4088-3 10 Duplex Slide Rule | $12.00 | 09-Oct-2007 | 4 |
| VINTAGE KEUFFEL & ESSER WOODEN 4054 SLIDE RULE | $11.50 | 13-Oct-2007 | 7 |
| MIB Keuffel & Esser Ever There Slide Rule 4097 | $11.50 | 22-Oct-2007 | 2 |
| Vintage 1939 Keuffel & Esser Slide Rule w/ lea | $11.06 | 07-Oct-2007 | 2 |
| ELECTRONICS~SLIDE RULER~KEUFFEL&ESSER~VERN W M | $10.75 | 09-Oct-2007 | 5 |
| Slide Rule K & E Log Log Duplex Decitrig 68-12 | $10.63 | 07-Oct-2007 | 2 |
| Vintage KEUFFEL & ESSER Slide Rule K&E 4139 Co | $10.60 | 23-Oct-2007 | 4 |
| KEUFFEL AND ESSER SLIDE RULE W/BOX NICE | $10.51 | 18-Oct-2007 | 2 |
| Very Old Keuffel & Esser Co. Slide Rule. W/ Lt | $10.50 | 14-Oct-2007 | 7 |
| Vintage Keuffel & Esser Slide Rule with Case & | $10.50 | 17-Oct-2007 | 2 |
| VINTAGE KEUFFEL AND ESSER NO.4081 SLIDE RULE A | $10.49 | 24-Oct-2007 | 2 |
| K & E SLIDE RULE MANUAL LOG & JET LOG DUPLEX D | $10.49 | 09-Oct-2007 | 2 |
| Antique Kueffel & Esser Slide Rule with leathe | $10.00 | 13-Oct-2007 | 1 |
| K & E Polyphase Duplex Decitrig Slide Rule & M | $10.00 | 18-Oct-2007 | 1 |
| KEUFFEL & ESSER DORIC POLYPHASE DUPLEX POCKET | $10.00 | 29-Oct-2007 | 1 |
| Keuffel & Esser N4058W Beginner's Slide Rule w | $10.00 | 10-Oct-2007 | 3 |
| K & E 4081-3 Log Log Duplex Decitrig SLIDE RUL | $9.99 | 28-Oct-2007 | 1 |
| Vintage K&E Slide Rule Keuffel & Esser Co. | $9.99 | 29-Oct-2007 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE | $9.99 | 11-Oct-2007 | 1 |
| KEUFFEL & ESSER SLIDE RULE 1900 USS RHODE ISLA | $9.99 | 14-Oct-2007 | 1 |
| K&E LOG LOG DUPLEX DECITRIG 4081-3 1947 SLIDE | $9.99 | 21-Oct-2007 | 1 |
| Vintage 1939 K&E Cooke Radio Slide Rule 4139 w | $9.99 | 06-Oct-2007 | 1 |
| Vintage K & E Log Log Dup Decit N4081-3 Slide | $9.99 | 22-Oct-2007 | 1 |
| 2 VINTAGE SLIDE RULERS - KEUFFEL & ESSER CO | $9.99 | 21-Oct-2007 | 1 |
| Early 20th Century Keuffel and Esser 4054 slid | $9.99 | 14-Oct-2007 | 1 |
| 1928 KEUFFEL & ESSER BEGINNER'S SLIDE RULE 405 | $9.99 | 07-Oct-2007 | 1 |
| Vintage Keuffel Esser 1376T 23 Slide Rule | $9.99 | 27-Oct-2007 | 1 |
| K&E LOG LOG DUPLEX DECITRIG SLIDE RULE MANUAL | $9.99 | 27-Oct-2007 | 1 |
| Keuffel & Esser K E Slide Rule Leather Case | $9.99 | 07-Oct-2007 | 1 |
| K&E KEUFFEL ESSER Sterling SLIDE RULE LOT Curv | $9.99 | 28-Oct-2007 | 1 |
| KEUFFEL & ESSER 4055 SLIDE RULE WITH CASE | $9.99 | 27-Oct-2007 | 1 |
| 1947 K&E Slide Rule - Log Log Duplex Decitrig | $9.99 | 07-Oct-2007 | 1 |
| VINTAGE KEUFFEL & ESSER WOOD SLIDE RULE W/CASE | $9.99 | 18-Oct-2007 | 1 |
| K & E 68 1210 Log Log Duplex Decitrig Slide Ru | $9.99 | 18-Oct-2007 | 2 |
| K E KEUFFEL & ESSER 4081-35 SLIDE RULE enginee | $9.99 | 31-Oct-2007 | 1 |
| VINTAGE K&E SLIDE RULE - LOG LOG DUPLEX DECITR | $9.99 | 29-Oct-2007 | 1 |
| Vintage 1940's Keuffel & Esser Slide Rule N405 | $9.99 | 14-Oct-2007 | 5 |
| K & E Log Log Duplex Decitrig 4081 Slide Rule | $9.95 | 14-Oct-2007 | 1 |
| 1938 K & E Mannheim Slide Rule Manual 4031S 40 | $9.95 | 29-Oct-2007 | 1 |
| Vintage Keuffel& Esser Co. NY slide rule case | $9.95 | 16-Oct-2007 | 1 |
| KEUFFEL & ESSER SLIDE RULE 4181-3 in GREEN CAS | $9.95 | 21-Oct-2007 | 1 |
| VINTAGE K & E SLIDE RULE N4081-3 LOG TOOL WITH | $9.76 | 25-Oct-2007 | 3 |
| KEUFFEL & ESSER Beginner Slide Rule 4058W w/Ca | $9.50 | 25-Oct-2007 | 1 |
| 1950s SLIDE RULE w. Case Kueffel & Esser Begin | $9.50 | 21-Oct-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule - 1940's - | $9.39 | 27-Oct-2007 | 3 |
| K&E Keuffel Esser Drafting Slide Rule 41st Cat | $9.00 | 22-Oct-2007 | 2 |
| Vintage K&E Slide Rule Manual Book Sliderule 4 | $7.99 | 15-Oct-2007 | 4 |
| K&E SLIDE RULES SELF INSTRUCTION MANUAL KEUFFE | $7.51 | 23-Oct-2007 | 4 |
| K & E LOG LOG DUPLEX DECITRIG SLIDE RULE | $6.99 | 31-Oct-2007 | 1 |
| "K & E slide rule manual, model N 4081/ 1947 p | $6.99 | 18-Oct-2007 | 1 |
| 1922 SLIDE RULE MANUAL Keuffel & Esser Brecken | $6.95 | 19-Oct-2007 | 1 |
| "K & E Vintage Keuffel & Esser Co 6"" Slide Ru | $6.76 | 24-Oct-2007 | 2 |
| "Vintage KEUFFEL & ESSER Slide Rule, 1964" | $6.49 | 23-Oct-2007 | 2 |
| Post Slide Rule and Keuffel & Esser Scale Rule | $6.49 | 17-Oct-2007 | 2 |
| K & E Polyphase Duplex Decitrig Slide Rule & M | $6.45 | 24-Oct-2007 | 2 |
| Wood Slide Rule Keuffel & Esser #4035 Antique | $6.37 | 31-Oct-2007 | 2 |
| Vintage K&E Slide Rule Blue Leather Case | $6.35 | 06-Oct-2007 | 2 |
| Vintage Keuffel & Esser Slide Rule - Leather C | $6.25 | 31-Oct-2007 | 1 |
| VINTAGE K & E LOG DUPLEX DECITRIG SLIDE RULE M | $6.00 | 17-Oct-2007 | 1 |
| 1947 Manual - K & E - LOG DUPLEX SLIDE RULE Mo | $5.99 | 25-Oct-2007 | 1 |
| "6"" Vintage Slide Rule Keuffel & Esser with b | $5.95 | 21-Oct-2007 | 3 |
| Keuffel & Esser Polyphase Duplex Slide Rule Ma | $5.95 | 10-Oct-2007 | 1 |
| K&E SLIDE RULE MANUAL No.4081 KEUFFEL & ESSER | $5.85 | 18-Oct-2007 | 5 |
| "Slide Rule: Keuffel & Esser, NY With Leather | $5.75 | 12-Oct-2007 | 4 |
| ANTIQUE KEUFFEL & ESSER IVORY SLIDE RULE - PAT | $5.50 | 21-Oct-2007 | 2 |
| Keuffel & Esser Polyphase Duplex Slide Rule Ma | $5.25 | 20-Oct-2007 | 3 |
| 1962 K & E Slide Ruler Instruction Manual 186 | $5.24 | 12-Oct-2007 | 2 |
| "K&E 4181 6"" slide rule" | $5.00 | 18-Oct-2007 | 2 |
| Keuffel & Esser Co. Slide Ruler | $5.00 | 12-Oct-2007 | 3 |
| "2 wood slide rules for beginners, Keuffel & E | $5.00 | 28-Oct-2007 | 1 |
| 1952 No. 4161 Slide Rule Manual Book KEUFFEL & | $4.99 | 27-Oct-2007 | 1 |
| "Manual ,Slide Rule LL Trig Duplex Keuffel & E | $4.99 | 09-Oct-2007 | 1 |
| 2 KEUFFEL & ESSER SLIDE RULE N4058W BEGINNER'S | $4.99 | 31-Oct-2007 | 1 |
| KEUFFEL & ESSER SLIDE RULE LOG LOG DUPLEX DECI | $4.99 | 31-Oct-2007 | 1 |
| Victorian Keuffel and Esser Beginner Slide Rul | $4.99 | 20-Oct-2007 | 1 |
| 1954 SLIDE RULE MANUAL K&E KEUFFEL POLYPHASE # | $4.99 | 29-Oct-2007 | 2 |
| Vintage Slide Rule KEUFFEL & ESSER CO 198778 P | $4.99 | 07-Oct-2007 | 1 |
| Vintage K&E Slide Rule w/ case - Model 4053-3 | $4.25 | 07-Oct-2007 | 5 |
| K&E Log Log Dec + Dietzgen 1768P Maniphase Sli | $4.00 | 08-Oct-2007 | 1 |
| 1925 Polyphase Slide Rule Book - Keuffel & Ess | $3.99 | 27-Oct-2007 | 1 |
| Keuffer & Esser Co. Polyphase Slide Rule w/Cas | $3.99 | 12-Oct-2007 | 1 |
| Vintage K&E Slide Rule Manual Sliderule 4081 6 | $3.82 | 29-Oct-2007 | 2 |
| VINTAGE POLYPHASE SLIDE RULE MANUAL K + E 1954 | $3.00 | 26-Oct-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule K-12 Prep | $2.99 | 17-Oct-2007 | 1 |
| Vintage Beginner's Slide Rule 4058 W by Keuffe | $2.99 | 21-Oct-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $2.95 | 21-Oct-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $2.95 | 07-Oct-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $2.95 | 14-Oct-2007 | 1 |
| Keuffel & Esser Co. Slide Ruler w/ Leather Cas | $2.25 | 25-Oct-2007 | 2 |
| Keuffel & Esser Co. Slide Rule # N4053-3 with | $2.24 | 23-Oct-2007 | 2 |
| Vintage Keuffel & Esser Beginner's Slide Rule | $0.99 | 31-Oct-2007 | 1 |
| 1927 K+E & 1959 Dietzgen SLIDE RULE MANUALS /v | $0.99 | 22-Oct-2007 | 1 |
| "2 Nice OLD SLIDE RULE Books, K & E plus anoth | $0.99 | 25-Oct-2007 | 1 |
| K & E Keuffel & Esser Co. Slide Rule model 681 | $0.99 | 14-Oct-2007 | 1 |
| Vintage K & E Slide Rule w/ Case - Model 4053- | $0.99 | 21-Oct-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $0.99 | 28-Oct-2007 | 1 |
| Vintage Keuffel & Esser N4081-3 Slide Rule & C | $0.99 | 21-Oct-2007 | 1 |
| KEUFFEL & ESSER CO. SLIDE RULE NO.4053 POLYPHA | $0.99 | 27-Oct-2007 | 1 |
| K&E 4083-3 slide rule | $35.00 | 25-Oct-2007 | 0 |
| K&E 4083-3 slide rule | $30.00 | 23-Oct-2007 | 0 |
| Vintage K & E 4055 Favorite Slide Rule w/Origi | $24.99 | 09-Oct-2007 | 0 |
| K&E KEUFFEL & ESSER #4081-3 BAMBOO SLIDE RULE | $23.00 | 17-Oct-2007 | 0 |
| K&E 4083-3 slide rule | $20.00 | 29-Oct-2007 | 0 |
| Vintage K&E Keuffel & Esser SLIDE RULE 4070-3 | $19.99 | 26-Oct-2007 | 0 |
| "K+E KEUFFEL & ESSER 4081-3 SLIDE RULE, INST & | $19.99 | 08-Oct-2007 | 0 |
| K&E KEUFFEL & ESSER #4081-3 BAMBOO SLIDE RULE | $19.00 | 25-Oct-2007 | 0 |
| Vintage KEUFFEL & ESSER 4092-3 SLIDE RULE w/CA | $17.50 | 24-Oct-2007 | 0 |
| "Keuffel & Esser Slide Rules Book, Deci-Lon 19 | $16.99 | 15-Oct-2007 | 0 |
| VINTAGE KEUFFEL & ESSER CO. FAVORITE SLIDE RUL | $12.99 | 16-Oct-2007 | 0 |
| Keuffel & Esser Manual for Polyphase Slide Rul | $9.99 | 18-Oct-2007 | 0 |
| VINTAGE K&E SLIDE RULE - LOG LOG DUPLEX DECITR | $9.99 | 14-Oct-2007 | 0 |
| "KEUFFEL & ESSER SLIDE RULE W/ LEATHER CASE -1 | $9.99 | 14-Oct-2007 | 0 |
| Vintage K&E Slide Rule Manual Book Sliderule 4 | $9.99 | 08-Oct-2007 | 0 |
| K & E Log Log Duplex Trig Slide Rule booklet M | $9.99 | 14-Oct-2007 | 0 |
| K & E Polyphase Duplex Slide Rule booklet 1922 | $9.99 | 14-Oct-2007 | 0 |
| Vintage Keuffel & Esser K&E Slide Rule #4080-3 | $9.99 | 14-Oct-2007 | 0 |
| "3 KEUFFEL & ESSER Slide Rules, PAT. JUNE 5,19 | $9.99 | 21-Oct-2007 | 0 |
| Lot of 2 Vintage Slide Rules Post K&E Occupied | $9.99 | 22-Oct-2007 | 0 |
| K+E Log Log Duplex Trig Slide Rule 4080-3 | $9.99 | 22-Oct-2007 | 0 |
| Vintage Keufflel & Esser Slide Rule | $9.99 | 22-Oct-2007 | 0 |
| Vintage Keuffel Esser 1376T 23 Slide Rule | $9.99 | 23-Oct-2007 | 0 |
| K&E LOG LOG DUPLEX DECITRIG 4081 Slide Rule Ma | $9.99 | 07-Oct-2007 | 0 |
| VINTAGE KEUFFEL & ESSER CO NY SLIDE RULER WITH | $9.99 | 25-Oct-2007 | 0 |
| Keuffel & Esser Manual for Polyphase Slide Rul | $9.99 | 25-Oct-2007 | 0 |
| 1924 KEUFFEL & ESSER CO.USA POLYPHASE DUPLEX S | $9.99 | 07-Oct-2007 | 0 |
| VINTAGE K & E SLIDE RULE N4081-3 LOG TOOL WITH | $9.99 | 18-Oct-2007 | 0 |
| KEUFFEL & ESSER CO. N.Y. BEGINNERS SLIDE RULE | $9.99 | 28-Oct-2007 | 0 |
| UNUSUAL KEUFFEL & ESSER SLIDE RULE K&E ENGINEE | $9.99 | 28-Oct-2007 | 0 |
| KEUFFEL & ESSER Co. POLYPHASE SLIDE RULE 1900 | $9.99 | 18-Oct-2007 | 0 |
| K+E Log Log Duplex Trig Slide Rule 4080-3 | $9.99 | 28-Oct-2007 | 0 |
| Lot of 2 Vintage Slide Rules Post K&E Occupied | $9.99 | 18-Oct-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule 4054 w Case | $9.99 | 18-Oct-2007 | 0 |
| Early K & E 4053-3 Slide Rule w/case | $9.99 | 08-Oct-2007 | 0 |
| Vintage Keufflel & Esser Slide Rule | $9.99 | 12-Oct-2007 | 0 |
| Vintage K & E Log Log Dup Decit N4081-3 Slide | $9.99 | 18-Oct-2007 | 0 |
| Antique 1900's K&E Co #89169 Slide Rule Made i | $9.99 | 31-Oct-2007 | 0 |
| K & E Log Log Duplex Trig Slide Rule Manual #4 | $9.95 | 07-Oct-2007 | 0 |
| 1938 K & E Mannheim Slide Rule Manual 4031S 40 | $9.95 | 07-Oct-2007 | 0 |
| K&E 4053-3 Adjustable Polyphase Mannhem Slide | $9.95 | 09-Oct-2007 | 0 |
| Keuffel & Esser Co. #4055 Slide Rule W/Box Pat | $9.95 | 07-Oct-2007 | 0 |
| Keuffel & Esser Slide Rule with Case 223 | $9.95 | 11-Oct-2007 | 0 |
| Keuffel & Esser Co. #4055 Slide Rule W/Box Pat | $9.95 | 29-Oct-2007 | 0 |
| K & E Log Log Duplex Trig Slide Rule Manual #4 | $9.95 | 29-Oct-2007 | 0 |
| "Slide Rule, Keuffel & Esser Co.,Orig. Leather | $9.95 | 09-Oct-2007 | 0 |
| K&E 4081-3 Log Log Duplex Decitirg Slide Rule | $9.90 | 23-Oct-2007 | 0 |
| VINTAGE 1920'S? KEUFFEL & ESSER CO. SLIDE RULE | $9.74 | 11-Oct-2007 | 0 |
| 1950s SLIDE RULE w. Case Kueffel & Esser Begin | $9.50 | 13-Oct-2007 | 0 |
| OLD K&E KEUFFEL ESSER 1900 1908 SLIDE RULE MOD | $9.00 | 21-Oct-2007 | 0 |
| VINTAGE KEUFFEL & ESSER WOODEN BEGINNERS SLIDE | $9.00 | 07-Oct-2007 | 0 |
| K&E KEUFFEL ESSER 1900 1908 RARE SLIDE RULE CA | $9.00 | 10-Oct-2007 | 0 |
| OLD K&E KEUFFEL ESSER LOG SLIDE RULE 4083-3 02 | $9.00 | 18-Oct-2007 | 0 |
| K & E #4058W Beginners Slide Rule and Case | $8.99 | 10-Oct-2007 | 0 |
| Vintage Keuffel & Esser Wooden Beginners Slide | $8.99 | 20-Oct-2007 | 0 |
| "KEUFFEL & ESSER SLIDE RULE W/ LEATHER CASE -1 | $7.99 | 22-Oct-2007 | 0 |
| Vintage Pocket Slide Rule K&E Keuffel & Esser | $7.99 | 07-Oct-2007 | 0 |
| SLIDE RULE - K & E - #N4041 | $7.95 | 18-Oct-2007 | 0 |
| SLIDE RULE - K & E - #N4041 | $7.95 | 22-Oct-2007 | 0 |
| KEUFFEL & ESSER CO SLIDE RULE IN LEATHER CASE | $7.50 | 18-Oct-2007 | 0 |
| Beginners Slide Rule 4058W-Keuffel & Esser Co. | $6.99 | 09-Oct-2007 | 0 |
| 4 SLIDE RULE BOOKS SMOLEY'S K&E PARKER LOGARIT | $6.99 | 13-Oct-2007 | 0 |
| Vintage 1943 K&E Log Log Duplex Decitrig Slide | $6.99 | 08-Oct-2007 | 0 |
| 2 Slide Rules Keuffel Ebber N4058W + Sterling | $6.00 | 27-Oct-2007 | 0 |
| Vintage K & E Beginners Slide Rule # 4058 W - | $5.99 | 26-Oct-2007 | 0 |
| K & E Slide Rule Manual Log Log Duplex Decitri | $5.99 | 18-Oct-2007 | 0 |
| Vintage 1961 Keuffel & Esser Co. Slide Rule | $5.99 | 30-Oct-2007 | 0 |
| 1939 K&E Slide Rule #4071 MANUAL Keuffel & Ess | $5.00 | 17-Oct-2007 | 0 |
| 1891 Keuffel & Esser Slide Rule Catalogue #s 4 | $5.00 | 21-Oct-2007 | 0 |
| KEUFFEL & ESSER SLIDE RULE LOG DECITRIG Antiqu | $5.00 | 07-Oct-2007 | 0 |
| ORIGINAL 1924 K & E POLYPHASE DUPLEX SLIDE RUL | $4.99 | 28-Oct-2007 | 0 |
| KEUFFEL AND ESSER CO. NY. SLIDERULE VINTAGE | $4.99 | 28-Oct-2007 | 0 |
| 1944 Polyphase Slide Rule Booklet-Keuffel & Es | $4.99 | 15-Oct-2007 | 0 |
| VINTAGE POLYPHASE SLIDE RULE MANUAL K + E 1954 | $3.00 | 21-Oct-2007 | 0 |
| 1955 SLIDE RULE MANUAL KEUFFEL & ESSER K & E 4 | $2.99 | 31-Oct-2007 | 0 |
| K&E SLIDE RULE MANUAL POLYPHASE #682063 1954 L | $2.99 | 19-Oct-2007 | 0 |
| SLIDE RULE #4083 SUPPLEMENTARY MANUAL K&E | $1.99 | 27-Oct-2007 | 0 |
| Ruler slide rule keuffel & Esser co ny antique | $0.99 | 23-Oct-2007 | 0 |
| KEUFFEL & ESSER CO. SLIDE RULE NO.4081LOG LOG | $0.99 | 27-Oct-2007 | 0 |
| 1925 KEUFFEL&ESSER CO Polyphase Slide Rule MAN | $0.99 | 06-Oct-2007 | 0 |