| Keuffel and Esser |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Apr-2007 |
| Thacher's Calculating Inst Keuffel & Esser Sli | $1625.00 | 21-Apr-2007 | 3 |
| Early K & E SlideRule Wm COX. PAT.Oct. 6.1891w | $1578.00 | 24-Apr-2007 | 20 |
| K&E 4081-3 Braille Log Log Duplex Decitrig Sli | $1304.33 | 15-Apr-2007 | 11 |
| 1891 RARE KEUFFEL & ESSER SLIDE RULE & ex/ SLI | $365.00 | 23-Apr-2007 | 12 |
| "20"" K&E N4081-5S Log Log Duplex Decitrig Sli | $311.59 | 22-Apr-2007 | 27 |
| Vintage K+E Engineering Slide Rule in box w/ex | $197.50 | 24-Apr-2007 | 16 |
| K+E Deci-Lon 5 #68-1130 slide rule w/case + ex | $189.89 | 27-Apr-2007 | 4 |
| OLD but NEW K&E DECILON POCKET 26 scl SLIDE RU | $189.50 | 01-Apr-2007 | 16 |
| "1947 Keuffel & Esser 22"" Slide Rule N 4081-5 | $180.50 | 19-Apr-2007 | 10 |
| "20"" K&E N4081-5 Log Log Duplex Decitrig Slid | $179.50 | 03-Apr-2007 | 7 |
| vintage K&E CHEMIST'S DUPLEX SLIDE RULE 4160 i | $148.28 | 19-Apr-2007 | 15 |
| EARLY KEUFFEL & ESSER K&E LOG LOG DUPLEX SLIDE | $131.50 | 11-Apr-2007 | 12 |
| slide rule Keuffel & Esser log log Duplex trig | $130.27 | 24-Apr-2007 | 8 |
| KEUFFEL & ESSER No. 4088-2 SLIDE RULE ~ 1908 | $130.25 | 02-Apr-2007 | 3 |
| Keuffel & Esser K+E Deci-lon Slide Rule No. 68 | $115.27 | 25-Apr-2007 | 16 |
| Three Vintage Slide Rule Keuffel & Esser (K+E) | $114.50 | 13-Apr-2007 | 13 |
| Vintage LARGE K&E DECI-LON 10 SLIDE RULE w/Cas | $109.50 | 08-Apr-2007 | 6 |
| "KEUFFEL & ESSER SLIDE RULE 4088-3 PAT 1900, 1 | $106.41 | 29-Apr-2007 | 6 |
| Vintage Keuffel & Esser DECI-LON 10 Slide Rule | $105.00 | 19-Apr-2007 | 1 |
| K & E Keuffel & Esser 68 1100 Slide Rule LN PL | $104.35 | 03-Apr-2007 | 18 |
| Vintage Keuffel & Esser Deci-Lon 10 Slide Rule | $104.00 | 17-Apr-2007 | 9 |
| Vintage K E Keuffel Esser 20 1/2 Inch Slide Ru | $102.50 | 29-Apr-2007 | 13 |
| OLD KEUFFEL & ESSER SLIDE RULE DATED 1908 | $93.00 | 14-Apr-2007 | 6 |
| Vintage Large 23in. Keuffel & Esser Slide Rule | $88.77 | 09-Apr-2007 | 7 |
| BIG VINTAGE COOKE RADIO KEUFFEL & ESSER SLIDE | $86.55 | 28-Apr-2007 | 7 |
| 1933 KEUFFEL & ESSER 21 Inch Slide Rule in Lea | $84.00 | 29-Apr-2007 | 10 |
| K+E Deci-Lon 10 #68-1100 slide rule w/case + e | $79.99 | 27-Apr-2007 | 1 |
| "K&E Keuffel & Esser Slide Rule # 4181-1 /Leat | $78.03 | 19-Apr-2007 | 15 |
| "Keuffel & Esser Slide Rule 20"" N4053-5 w/ Ca | $77.00 | 17-Apr-2007 | 7 |
| "20"" K&E N4053-5 Log Log Duplex Decitrig Slid | $76.00 | 03-Apr-2007 | 8 |
| "12.75"" OLD & NEW K&E 68-1100 DECILON SLIDE R | $73.37 | 01-Apr-2007 | 8 |
| "Keuffel Esser 7"" log slide rule 4181 - 1 LOO | $73.00 | 05-Apr-2007 | 14 |
| K&E Slide Rule Log Log Duplex Decitrig 68 1210 | $71.00 | 17-Apr-2007 | 5 |
| K&E LOG LOG DUPLEX DECITRIG NO. 4081 SLIDE RUL | $69.68 | 14-Apr-2007 | 13 |
| VTG 1947 K&E LOG LOG DUPLEX DECITRIG 4081-3 SL | $66.00 | 20-Apr-2007 | 14 |
| Keuffel & Esser K&E slide rule ruler 20.5 inch | $63.00 | 28-Apr-2007 | 11 |
| K&E Deci-Lon Slide Rule with case NR | $61.00 | 11-Apr-2007 | 7 |
| Vintage Keuffel & Esser Slide Rule w/ Case ! N | $61.00 | 24-Apr-2007 | 6 |
| "Vintage K&E N4053-5 Mannheim Polyphase slide | $58.60 | 23-Apr-2007 | 6 |
| Keuffel & Esser K & E Slide Rule 4081-3 Log Lo | $56.97 | 15-Apr-2007 | 9 |
| Vintage Keuffel & Esser DECI-LON 10 Slide Rule | $53.00 | 29-Apr-2007 | 4 |
| KEUFFEL & ESSER K&E 4083-3 LOG LOG VECTOR SLID | $52.85 | 04-Apr-2007 | 5 |
| ~ VINTAGE K&E POCKET SLIDE RULE ~ | $52.05 | 12-Apr-2007 | 9 |
| K & E KEUFFEL ESSER DECI-LON 10 SLIDE RULE & C | $52.00 | 30-Apr-2007 | 12 |
| Old Keuffel & Esser 4053-5 Slide Rule and Case | $51.35 | 26-Apr-2007 | 6 |
| Keuffel & Esser Co. K&E DECI-LON 10 Slide Rule | $51.00 | 15-Apr-2007 | 7 |
| Keuffel & Essler 4081-3 Log Log Decitrig Slide | $51.00 | 03-Apr-2007 | 9 |
| "KEUFFEL & ESSER Slide Rule 20"" N4053-5 w/Cas | $50.49 | 15-Apr-2007 | 6 |
| K&E Decilon 10 Slide Rule with leather case | $50.00 | 26-Apr-2007 | 11 |
| Vintage Keuffel & Esser Pocket Slide Rule in B | $49.99 | 06-Apr-2007 | 17 |
| K&E Slide Rule 4181-1 w Leather Case | $49.50 | 09-Apr-2007 | 7 |
| Keuffel & Esser K&E 68 1100 Deci-Lon 10 Slide | $49.00 | 02-Apr-2007 | 6 |
| K&E WOOD SLIDE RULE MODEL 4080-3 WITH 68-2233 | $48.11 | 09-Apr-2007 | 6 |
| Keuffel & Esser Slide Rule/Case/Manual | $46.00 | 20-Apr-2007 | 15 |
| Keuffel Esser Log Log Duplex Decitrig Sliderul | $46.00 | 20-Apr-2007 | 5 |
| K&E LOG LOG DUPLEX VECTOR NO. N4083- SLIDE RUL | $46.00 | 18-Apr-2007 | 7 |
| Keuffel & Esser Slide Rule Deci-Lon 10 68-1100 | $46.00 | 29-Apr-2007 | 5 |
| "K+E Slide Rule 4181-1 w/Leather cse 7"" Keuff | $43.17 | 04-Apr-2007 | 21 |
| KEUFFEL & ESSER LOG LOG DUPLEX DECITRIG SLIDE | $42.23 | 25-Apr-2007 | 10 |
| K&E Keuffel & Esser 4181 Slide Rule Case Manua | $42.00 | 21-Apr-2007 | 9 |
| "Vintage K&E Polyphase Slide Rule N4053-5, Mah | $41.44 | 07-Apr-2007 | 6 |
| Vintage K&E SLIDE RULE 4181-3 Keuffel Esser C. | $41.00 | 01-Apr-2007 | 14 |
| KEUFFEL & ESSER No. 4080-3 Slide Rule w/Case | $41.00 | 12-Apr-2007 | 6 |
| "K&E 4181-1 7"" Ivorite Slide Rule with K&E ca | $40.99 | 21-Apr-2007 | 8 |
| Vintage K&E Slide Rule 1947 | $39.99 | 14-Apr-2007 | 8 |
| KEUFFEL & ESSER K&E DECI-LON 10 SLIDE RULE W/C | $38.89 | 06-Apr-2007 | 9 |
| K&E 68-1261 5 Inch Pocket Slide Rule W/ Clip C | $38.84 | 10-Apr-2007 | 6 |
| KEUFFEL & ESSER (K&E) Jet-Log Slide Rule 68 12 | $38.77 | 26-Apr-2007 | 4 |
| "K&E (Keuffel & Esser Co.) Slide Ruler 12""" | $37.25 | 24-Apr-2007 | 6 |
| SLIDE RULE K & E LOG LOG DUPLEX DECITRIG N 408 | $37.00 | 29-Apr-2007 | 7 |
| 1940s KEUFFEL & ESSER SLIDE RULE 68-1251....VE | $36.99 | 29-Apr-2007 | 7 |
| "K&E (Keuffel & Esser Co.) Slide Ruler 22""" | $36.69 | 24-Apr-2007 | 6 |
| "K&E POLYPHASE DUPLEX DECITRIG SLIDE RULE, MAN | $36.00 | 03-Apr-2007 | 1 |
| 1950's K&E Slide Rule No. 4081 | $36.00 | 03-Apr-2007 | 5 |
| Keuffel & Esser K&E N4080-3 slide rule w box a | $35.00 | 01-Apr-2007 | 11 |
| "Keuffel Esser Slide Rule of Gen.""Vinegar Joe | $34.33 | 08-Apr-2007 | 6 |
| Pat. 1947 K&E / Keuffel & Esser Co. 4181-3 Sli | $33.00 | 18-Apr-2007 | 8 |
| K&E K E 4081-3S Log Log Duplex Decitrig Slide | $32.25 | 22-Apr-2007 | 2 |
| Slide Rule Log Log Duplex Decitrig K&E # 4081 | $32.00 | 16-Apr-2007 | 5 |
| K & E LOG LOG DUPLEXDECITRIG SLIDE RULE N4081- | $31.99 | 04-Apr-2007 | 3 |
| K&E Deci-Lon Slide Rule with case NR | $31.50 | 11-Apr-2007 | 4 |
| "K&E Slide Rule Log Log Duplex Decitrig 4181-1 | $31.00 | 07-Apr-2007 | 8 |
| K & E Slide Rule Log Log Duplex Dectrig | $31.00 | 22-Apr-2007 | 6 |
| "K+E 4081-3 Slide Rule w/Case, Magnifier & Man | $30.00 | 24-Apr-2007 | 1 |
| K+E 4081-3 Log Log Duplex Decitrig Slide Rule | $29.99 | 27-Apr-2007 | 1 |
| K&E Keuffel & Esser Slide Rule Mint w Case 3 S | $29.00 | 07-Apr-2007 | 2 |
| Keuffel & Esser Slide Rule No 4080-3 | $29.00 | 17-Apr-2007 | 3 |
| "Antique ""K & E"" Slide Rule with Leather Cas | $28.99 | 04-Apr-2007 | 10 |
| "KEUFFEL & ESSLER SlideRule, K & E Slide Rule, | $28.89 | 29-Apr-2007 | 3 |
| antique K & E Keuffel & Esser oak slide rule # | $28.55 | 13-Apr-2007 | 4 |
| WWII Military Keuffel & Esser Triangulation Sl | $28.21 | 08-Apr-2007 | 6 |
| VERY OLD KEUFFEL & ESSER SLIDE RULE IN CASE PA | $28.00 | 24-Apr-2007 | 1 |
| Vintage K&E Slide Rule in Case / Excellent Con | $26.00 | 12-Apr-2007 | 4 |
| K & E SLIDE RULE NO N4081-3 LOG LOG DUPLEX DEC | $26.00 | 06-Apr-2007 | 6 |
| K & E Log Log Duplex Dectrig Slide Rule PN 418 | $26.00 | 15-Apr-2007 | 4 |
| 1947 K & E LOG LOG DUPLEX DECITRIG 4081-3 SLID | $24.88 | 24-Apr-2007 | 1 |
| K&E Keuffel Esser Log Log Duplex Trig Slide Ru | $24.50 | 07-Apr-2007 | 7 |
| 3 Vintage SLIDE RULES Lawrence Sterling Keuffe | $24.39 | 17-Apr-2007 | 4 |
| Keuffel & Esser K&E 4081-3 slide rule w/ box a | $23.69 | 01-Apr-2007 | 9 |
| Vintage Keuffel & Esser NY Deo Trig Slide Rule | $23.50 | 01-Apr-2007 | 6 |
| K&E Keuffel & Esser 4080-3S Log Duplex Trig Sl | $23.50 | 06-Apr-2007 | 15 |
| KEUFFEL & ESSER K&E 4081-3 LOG LOG VECTOR SLID | $23.50 | 13-Apr-2007 | 2 |
| Vintage 1947 K&E Keuffel Esser Slide Rule Mode | $23.17 | 23-Apr-2007 | 9 |
| K+E Keuffel & Esser Deci-Lon 1100 10 Slide Rul | $22.20 | 16-Apr-2007 | 4 |
| Keuffel & Esser Log Log Duplex Slide Rule with | $22.00 | 21-Apr-2007 | 6 |
| LIKE NEW K&E SLIDE RULE MAGNIFIER PAT. NO. 2-7 | $21.49 | 13-Apr-2007 | 9 |
| KEUFFEL & ESSER Vintage Slide Rule /Case/Paper | $20.51 | 19-Apr-2007 | 6 |
| ANTIQUE KEUFFEL & ESSER SLIDE RULE PAT.1900 & | $20.50 | 02-Apr-2007 | 3 |
| K&E Log Log Duplex Decitrig Slide Rule Case An | $20.50 | 29-Apr-2007 | 6 |
| Vintage Keuffel & Esser K&E Log Log Duplex Sli | $20.49 | 22-Apr-2007 | 3 |
| 1947 Copyright Keuffel & Esser 4181-3 Sliderul | $20.00 | 15-Apr-2007 | 1 |
| KEUFFEL & ESSER (K&E) K12 Prep Slide Rule 68 1 | $20.00 | 26-Apr-2007 | 1 |
| K&E Pocket Slide Rule 4150-1 | $20.00 | 26-Apr-2007 | 1 |
| Keuffel and Esser N.Y. MERCHANT SLIDE RULER 19 | $19.99 | 02-Apr-2007 | 1 |
| "VINTAGE KEUFFEL & ESSER CO. N.Y. SLIDE RULER | $19.99 | 02-Apr-2007 | 1 |
| OLD Keuffel & Esser K & E 4071-3 Slide Rule w/ | $19.99 | 15-Apr-2007 | 1 |
| "SLIDE RULE,KEUFFEL&ESSER CO.Nš 4181-1,MADE IN | $19.99 | 17-Apr-2007 | 1 |
| KEUFFEL & ESSER 4081-3 SLIDE RULE K&E | $19.12 | 14-Apr-2007 | 4 |
| Keuffel & Esser Vintage Slide Rule and Draftin | $18.50 | 16-Apr-2007 | 3 |
| KEUFFEL & ESSER Slide Rule Magnifier | $18.50 | 12-Apr-2007 | 7 |
| Keuffel & Essler 68 1210 Log Log Decitrig Slid | $17.45 | 03-Apr-2007 | 6 |
| "SLIDE RULE K&E VINTAGE #4181-3 12 1/2"" *WOW* | $17.00 | 29-Apr-2007 | 5 |
| Older KEUFFEL & ESSER Polyphase SLIDE RULE/Lea | $16.50 | 27-Apr-2007 | 4 |
| "K E Keuffel & Esser Patented Wood Slide Rule | $16.49 | 03-Apr-2007 | 3 |
| Vintage Keuffel & Esser Co. Slide Rule w/ Case | $16.27 | 22-Apr-2007 | 2 |
| SLIDE RULE 4080 3 LOG DUPLEX TRIG KEUFFEL ESSE | $16.01 | 04-Apr-2007 | 5 |
| "K&E N9081-3 Slide Rule,Manual,Case,Box 1947" | $15.55 | 12-Apr-2007 | 3 |
| Miniature Vintage Doric K&E Keuffel & Esser Sl | $15.50 | 28-Apr-2007 | 3 |
| antique K & E Keuffel & Esser oak slide rule # | $15.50 | 22-Apr-2007 | 2 |
| "ANTIQUE K & E KEUFFEL & ESSER 4053-5 SLIDE RU | $15.05 | 01-Apr-2007 | 4 |
| 3 K+E (Keuffel & Esser) Vintage Slide Rule Man | $15.00 | 28-Apr-2007 | 1 |
| "** RARE VINTAGE ANTIQUE ** K & E 10"" SLIDE R | $15.00 | 15-Apr-2007 | 1 |
| vintage Keuffel Esser K&E Slide Rule N4081-3 w | $15.00 | 18-Apr-2007 | 4 |
| KEUFFEL & ESSER COMPANY ENGINEERING SLIDE RULE | $14.99 | 15-Apr-2007 | 1 |
| VINTAGE K & E SLIDE RULES NO 4083 & 4041 BOX & | $14.95 | 08-Apr-2007 | 3 |
| 4 Vintage Slide Rules K&E Sun Hemmi Lawrence B | $14.29 | 22-Apr-2007 | 3 |
| 2 Vintage Keuffel & Esser Slide Rules 4081-3 4 | $14.25 | 23-Apr-2007 | 2 |
| 3 Vintage Wood Slide Rule K&E 4053 4054 4088 L | $13.65 | 07-Apr-2007 | 2 |
| K&E Co Vintage Slide Rule 4081-3S w/Leather Ca | $13.61 | 20-Apr-2007 | 8 |
| 2 Keuffel & Esser ( K&E ) Slide Rule / Leather | $13.50 | 19-Apr-2007 | 2 |
| K&E SLIDE RULE MODEL 4161-1 | $13.50 | 03-Apr-2007 | 5 |
| KEUFFEL & ESSER SLIDE RULE MANUALS N4080 AND B | $13.29 | 29-Apr-2007 | 6 |
| KEUFFEL & ESSER CO. N.Y. SLIDE RULE 4081-3 | $13.29 | 28-Apr-2007 | 3 |
| *** Vintage K & E Slide Rule (4081-35) *** | $13.02 | 12-Apr-2007 | 7 |
| Older Quality Keuffel & Esser Slide Rule Look! | $13.00 | 19-Apr-2007 | 4 |
| "Keuffel & Esser Co. 13"" Slide Rule Log Log D | $13.00 | 20-Apr-2007 | 7 |
| "KEUFFEL & ESSER 4181-3 SLIDE RULE with CASE, | $12.99 | 22-Apr-2007 | 1 |
| Vintage K&E Mannheim Polyphase Slide Rule Wood | $12.99 | 09-Apr-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule Patent Date | $12.95 | 02-Apr-2007 | 1 |
| NICE Keuffel & Esser 4168 Pocket Slide Rule in | $12.50 | 09-Apr-2007 | 2 |
| Keuffel & Esser Co BEGINNER's SLIDE RULE <4058 | $12.50 | 04-Apr-2007 | 3 |
| *KEUFFEL & ESSER CO. SLIDE RULE WITH BLACK CAS | $12.50 | 02-Apr-2007 | 5 |
| LUTZ Slide Rule No. 252P Keuffel & Esser + bon | $12.50 | 21-Apr-2007 | 2 |
| 2 VINTAGE SLIDE RULE~ KEUFFEL & STERLING 1965 | $12.15 | 22-Apr-2007 | 5 |
| Keuffel & Esser Co Polyphase Duplex Slide Rule | $11.61 | 23-Apr-2007 | 2 |
| KEUFFEL & ESSER K&E 4092-3 SLIDE RULE | $11.61 | 24-Apr-2007 | 3 |
| SLIDE RULE POLYPHASE K&E KEUFFEL & ESSER MANUA | $11.50 | 15-Apr-2007 | 2 |
| VINTAGE KEUFFEL & ESSER CO. K & E SLIDE RULE 1 | $11.16 | 08-Apr-2007 | 2 |
| DRAFTING SLIDE RULE FROM KEUFFEL & ESSSOR CO. | $10.99 | 05-Apr-2007 | 2 |
| Keuffel & Esser Co. Slide Rule Copyright 1947. | $10.50 | 25-Apr-2007 | 8 |
| Early Keuffel & Esser (K&E) Slide Rule N4053-3 | $10.50 | 22-Apr-2007 | 2 |
| Vintage KEUFFEL Slide Rule Ruler & DRAFTING TO | $10.50 | 01-Apr-2007 | 2 |
| Vintage 1952 Keuffel & Esser Slide Rule Ruler | $10.50 | 04-Apr-2007 | 3 |
| Slide Rule Log Log Duplex Decitrig 4081 Keuffe | $10.50 | 05-Apr-2007 | 2 |
| 1962*K & E SLIDE RULES*DECI-LON INSTRUCTION MA | $10.50 | 10-Apr-2007 | 3 |
| K&E SLIDE RULE MODEL 4088-3 | $10.49 | 03-Apr-2007 | 3 |
| Vintage K&E SLIDE RULE 4181-3 Keuffel Esser C. | $10.02 | 01-Apr-2007 | 2 |
| 1937 Vintage Keuffel & Esser Company Slide Rul | $10.00 | 24-Apr-2007 | 2 |
| Keuffel & Esser 4058 C Slide Rule W/ Box & Ins | $9.99 | 11-Apr-2007 | 1 |
| Keuffel & Esser N4081-3 Slide Rule & Leather C | $9.99 | 29-Apr-2007 | 1 |
| "Early Keuffel & Esser 12"" Engineers Slide Ru | $9.99 | 07-Apr-2007 | 1 |
| ANTIQUE QUICK & EASY SLIDE RULE w/CASE & INSTR | $9.99 | 11-Apr-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule-Mahogany/Ce | $9.99 | 08-Apr-2007 | 1 |
| "KEUFFEL &ESSERCO, 4181 SLIDE RULE 1947" | $9.99 | 16-Apr-2007 | 1 |
| Keuffel&Esser Co. Slide rule w/leather case. | $9.99 | 21-Apr-2007 | 1 |
| KEUFFEL & ESSER K&E SLIDE RULER | $9.99 | 24-Apr-2007 | 2 |
| PAT JUNE 5 1900 KEUFFEL & ESSER CO. N.Y. SLIDE | $9.99 | 08-Apr-2007 | 1 |
| Vintage K & E Slide Rule 1947 Keuffel Esser Co | $9.99 | 19-Apr-2007 | 1 |
| VINTAGE KEUFFEL & ESSER CO SLIDE RULE 4058W BE | $9.99 | 21-Apr-2007 | 1 |
| Keuffle & Esser co. Slide Rule | $9.99 | 07-Apr-2007 | 1 |
| 1916 Keuffel & Esser Slide Ruler #4058 | $9.99 | 19-Apr-2007 | 1 |
| Keuffel Esser 4055 Favorite Slide Rule w Case | $9.99 | 21-Apr-2007 | 1 |
| """DECI-LON"" K+E Slide Rules Manual" | $9.99 | 06-Apr-2007 | 1 |
| Old Polyphase Keuffel & Esser Slide Rule Dated | $9.97 | 21-Apr-2007 | 1 |
| Keuffel & Esser K&E 4081-3 slide rule 12 inch | $9.95 | 08-Apr-2007 | 1 |
| K & E LOG LOG Duplex Decitrig Slide Rule/No.40 | $9.95 | 02-Apr-2007 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE | $9.95 | 16-Apr-2007 | 1 |
| K&E Wood Slide Rule Log Log Duplex Decitrig w | $9.95 | 22-Apr-2007 | 1 |
| Keuffel&Esser 4083-3 -3 log vector slide rule- | $9.95 | 08-Apr-2007 | 1 |
| K E 4097B pocket slide rule (Ever There) w/ ca | $9.49 | 14-Apr-2007 | 2 |
| Keuffel & Esser Co Log Log Duplex Decitrig Sli | $9.49 | 04-Apr-2007 | 3 |
| Keuffel & Esser Slide Rule-N4081-3-Copyright 1 | $9.40 | 21-Apr-2007 | 2 |
| KEUFFEL & ESSER 4031 MINI SLIDE RULE Pat. 1900 | $9.40 | 01-Apr-2007 | 2 |
| lot vintage K&E KEUFFEL ESSER SLIDE RULE 4091- | $9.00 | 25-Apr-2007 | 1 |
| Keuffel & Esser Pat 00 08 Slide Rule Unusual W | $9.00 | 29-Apr-2007 | 1 |
| Slide Rule - Keuffel & Esser- K&E 4081-3 - Bam | $9.00 | 29-Apr-2007 | 1 |
| "Antique Keuffel & Esser Co. Slide Rule - N-40 | $8.55 | 07-Apr-2007 | 6 |
| SLIDE RULE KEUFFEL & ESSER CO. N.Y. | $8.50 | 07-Apr-2007 | 4 |
| K+E Slide Rule Manual Log Log Duplex Decitrig | $8.50 | 14-Apr-2007 | 10 |
| K & E LOG LOG Duplex Decitrig Slide Rule Manua | $8.27 | 02-Apr-2007 | 5 |
| vintage K+E N4081-3 LOG LOG DUPLEX DECITRIG SL | $8.01 | 26-Apr-2007 | 4 |
| Vintage Keuffel Esser K & E Slide Rule 4055 Ca | $7.95 | 02-Apr-2007 | 1 |
| K + E Log Log Duplex Decitrig Slide Rule Manua | $7.75 | 09-Apr-2007 | 2 |
| Keuffel & Esser Slide Rule Model 4088-3 | $7.39 | 28-Apr-2007 | 2 |
| Keuffel & Esser K & E Slide Ruler 4058W w/case | $7.25 | 11-Apr-2007 | 4 |
| Vintage Slide Rule & Case - Keuffel & Esser Co | $7.01 | 01-Apr-2007 | 2 |
| Keuffel & Esser Slide Rules a self instruction | $7.00 | 05-Apr-2007 | 6 |
| "RARE 10"" Keuffel & Esser Slide Rule w/Leathe | $6.99 | 12-Apr-2007 | 1 |
| Vintage K&E Slide Ruler Black Leather Precisio | $6.99 | 08-Apr-2007 | 2 |
| Vintage K&E Log Log Duplex 4081-3 Slide rule N | $6.95 | 02-Apr-2007 | 1 |
| 1943 K&E LOG LOG DUPLEX TRIG SLIDE RULE 4080 M | $6.95 | 22-Apr-2007 | 1 |
| SLIDE RULE KEUFFEL & ESSER CO. N.Y. | $6.50 | 07-Apr-2007 | 5 |
| K & E Doric Slide Rule with Leather Case | $6.50 | 19-Apr-2007 | 6 |
| Vintage Keuffel and Esser K&E K E Slide Rule 4 | $6.50 | 19-Apr-2007 | 5 |
| 1947 KEUFFEL & ESSER n4081-3 Slide Rule / case | $6.50 | 29-Apr-2007 | 1 |
| VINTAGE KEUFFEL & ESSER 4092-3 SLIDE RULE & CA | $6.50 | 22-Apr-2007 | 3 |
| Slide Rule Manual Keuffel & Esser Co. 1943-55 | $6.49 | 10-Apr-2007 | 2 |
| K & E Slide Rule Manual SC 1955 | $6.29 | 26-Apr-2007 | 4 |
| K & E SLIDE RULES Deci-Lon KEUFFEL & ESSER Man | $6.09 | 01-Apr-2007 | 4 |
| "K&E vintage pocket slide rule, leather case, | $6.02 | 02-Apr-2007 | 3 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE | $6.01 | 02-Apr-2007 | 2 |
| Vintage K&E Keuffel & Esser slide rule w/ leat | $5.99 | 02-Apr-2007 | 1 |
| K & E BEGINNER'S SLIDE RULE. N4058W made USA | $5.50 | 17-Apr-2007 | 3 |
| "KEUFFEL ESSER SLIDE RULE,.WITH CASE" | $5.50 | 20-Apr-2007 | 8 |
| Slide Rule Keuffel & Esser Co Model # 4092 | $5.00 | 05-Apr-2007 | 1 |
| 1944 K&E Keuffel Esser Slide Rule Instruction | $5.00 | 13-Apr-2007 | 1 |
| K&E K & E Slide Rule Keuffef & Esser Very Old | $5.00 | 02-Apr-2007 | 1 |
| Keuffel & Esser Slide Rule 10 1/2 Inches Long | $5.00 | 24-Apr-2007 | 1 |
| vintage K&E Polyphase Duplex Slide Rule PAT. D | $4.99 | 16-Apr-2007 | 1 |
| Vintage Keuffel Esser Slide Rule 4081-3 w/ cas | $4.99 | 04-Apr-2007 | 1 |
| 1931 KEUFFEL & ESSER calendar SLIDE RULE & SUR | $4.99 | 22-Apr-2007 | 1 |
| "K&E 18"" SLIDE RULE PARAGON MODEL #60 0518-19 | $4.99 | 22-Apr-2007 | 1 |
| KEUFFEL ESSER CO. BEGINNERS SLIDE RULER MADE I | $4.99 | 04-Apr-2007 | 1 |
| K & E LOG LOG DUPLEX DECITRIG Slide Rule Manua | $4.99 | 12-Apr-2007 | 1 |
| VINTAGE ANTIQUE KEUFFEL ESSER SLIDE RULE RULER | $4.99 | 17-Apr-2007 | 2 |
| "VINTAGE Slide rule, Keuiffel & Esser Co. N.Y. | $4.95 | 09-Apr-2007 | 1 |
| 1947 K & E -KEUFFEL & ESSER SLIDE RULE W/CASE | $4.75 | 03-Apr-2007 | 2 |
| VINTAGE 1925 POLYPHASE SLIDE RULE MANUAL KEUFF | $4.50 | 23-Apr-2007 | 1 |
| KEUFFEL & ESSER CO. N.Y. Sliderule | $4.50 | 27-Apr-2007 | 2 |
| VINTAGE K&E SLIDE RULE LOG LOG DELUXE WITH CAS | $4.25 | 04-Apr-2007 | 2 |
| Older Keuffel & Esser Slide Rule N4053-3 | $4.00 | 11-Apr-2007 | 1 |
| K & E Keuffel & Esser Co Slide Rule Manual 408 | $3.99 | 22-Apr-2007 | 2 |
| 1945 K&E Log Log Decitrig Slide Rule Manual Bo | $3.99 | 14-Apr-2007 | 1 |
| 1947 Keuffel & Esser Duplex Decitrig Slide Rul | $3.99 | 29-Apr-2007 | 1 |
| Very Old Keuffel & Esser Slide Rule - No. 3150 | $3.00 | 29-Apr-2007 | 1 |
| Very Old Keuffel & Esser Slide Rule - No. 2021 | $3.00 | 29-Apr-2007 | 1 |
| 1938 Keuffel & Esser Co.Polyphase Slide Rule B | $2.99 | 22-Apr-2007 | 1 |
| Keuffel & Essser Slide Ruler | $2.95 | 22-Apr-2007 | 1 |
| 1944 K & E KEUFFEL & ESSER SLIDE RULE #N 4053 | $2.54 | 05-Apr-2007 | 5 |
| Keuffel & Esser Co. Slide Rule 4058 W Beginner | $2.00 | 07-Apr-2007 | 1 |
| K & E Keuffel & Esser Co. Slide Rule Manual 41 | $1.99 | 07-Apr-2007 | 1 |
| 1949 K&E LOG DUPLEX DECITRIG SLIDE RULE MANUAL | $0.99 | 15-Apr-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule K E Slide R | $0.99 | 16-Apr-2007 | 1 |
| Keuffel & Esser Co. Slide Rule | $0.99 | 21-Apr-2007 | 1 |
| 1943 Decitrig Slide Rule Book Esser Keuffel K | $0.99 | 22-Apr-2007 | 1 |
| K&E SLIDE RULE MODEL 4058W | $0.99 | 03-Apr-2007 | 1 |
| Keuffel & Esser Slide Rule Model N4053-3 | $0.99 | 10-Apr-2007 | 1 |
| Keuffel & Esser 4058C Slide Rule | $0.99 | 14-Apr-2007 | 2 |
| Keuffle & Esser. and Federic Post Co. Slide ru | $0.99 | 04-Apr-2007 | 1 |
| Keuffel & Esser Co Polyphase Duplex Slide Rule | $0.99 | 27-Apr-2007 | 1 |
| KEUFFEL & ESSER POLYPHASE SLIDE RULE 68-1622~N | $0.99 | 11-Apr-2007 | 1 |
| "Giant 85"" Keuffer & Esser Co. Demonstration | $750.00 | 23-Apr-2007 | 0 |
| K & E LOG LOG Duplex Decitrig SLIDE RULE with | $90.00 | 15-Apr-2007 | 0 |
| VTG K & E LOG LOG DUPLEX DECITRIG 4081 SLIDE R | $49.99 | 29-Apr-2007 | 0 |
| Vintage 1947 K&E Slide Rule | $39.99 | 07-Apr-2007 | 0 |
| VERY EARLY K&E BAMBOO OR MAHOGANY SLIDE RULE | $36.00 | 17-Apr-2007 | 0 |
| VERY EARLY K&E BAMBOO OR MAHOGANY SLIDE RULE | $36.00 | 10-Apr-2007 | 0 |
| VINTAGE K & E SLIDE RULE WITH CASE AND BOX NO | $29.99 | 26-Apr-2007 | 0 |
| Nice old K&E Manheim N4041 slide rule with cas | $25.00 | 14-Apr-2007 | 0 |
| OLD K&E #4095 BAMBOO SLIDE RULE | $22.99 | 11-Apr-2007 | 0 |
| "K & E PolyPhase Slide Rule 4053-3 10""; Excel | $19.99 | 24-Apr-2007 | 0 |
| Vintage K&E Log Log Duplex Slide Rule 4092-3S | $19.99 | 19-Apr-2007 | 0 |
| VINTAGE Keuffel and Esser CO. N.Y. SLIDE RULER | $19.99 | 02-Apr-2007 | 0 |
| Keuffel & Esser Slide Rule Polyphase Duplex No | $19.99 | 17-Apr-2007 | 0 |
| VINTAGE KEUFFEL & ESSER No. 4080-3 Slide Rule | $19.99 | 20-Apr-2007 | 0 |
| Vintage Slide Rule Keuffel & Esser Co. N Y Rul | $19.99 | 03-Apr-2007 | 0 |
| Keuffel & Esser Slide Rule Polyphase Duplex No | $19.99 | 27-Apr-2007 | 0 |
| Vintage Keuffel & Esser K&E Log Log Duplex Sli | $19.99 | 19-Apr-2007 | 0 |
| Keuffel and Esser Decilon 10 Slide Rule and ca | $18.50 | 24-Apr-2007 | 0 |
| "K&E Aristo #89 Slide Rule 6"" w/ nice leather | $17.00 | 29-Apr-2007 | 0 |
| KEUFFEL & ESSER CO. N.Y. SLIDE RULE 4081-3 | $17.00 | 14-Apr-2007 | 0 |
| Vintage Keuffel & Esser 4058W Slide Rule W/Cas | $15.99 | 06-Apr-2007 | 0 |
| "Vintage,Slide Rule,Keuffel,Esser,Log Log Trig | $15.97 | 08-Apr-2007 | 0 |
| OLD K & E KEUFFEL & ESSER OAK SLIDE RULE W/CAS | $14.99 | 26-Apr-2007 | 0 |
| US Patent Print Keuffel K&E Slide Rule - Thach | $14.95 | 03-Apr-2007 | 0 |
| US Patent Prints Keuffel K&E Slide Rule - Full | $14.95 | 04-Apr-2007 | 0 |
| Kueffel & Esser Slide Rule 4053-3 W/Box Excell | $13.99 | 08-Apr-2007 | 0 |
| VINTAGE KEUFFEL & ESSER 4058-C SLIDE RULE WITH | $12.99 | 15-Apr-2007 | 0 |
| Nice Vintage Slide Ruler Keuffel & Esser co. w | $12.99 | 22-Apr-2007 | 0 |
| K&E Slide Rule 4058W | $10.00 | 10-Apr-2007 | 0 |
| K&E SLIDE RULE MODEL 4081-3 | $9.99 | 02-Apr-2007 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 22-Apr-2007 | 0 |
| "Keuffel & Esser Co., Log Duplex Slide Rule, c | $9.99 | 02-Apr-2007 | 0 |
| K&E Slide Rule Manual | $9.99 | 18-Apr-2007 | 0 |
| VINTAGE SLIDE RULE W/CASE KEUFFEL & ESSER K&E | $9.99 | 16-Apr-2007 | 0 |
| Slide Rule 1941 K&E 4080-3S | $9.99 | 24-Apr-2007 | 0 |
| SLIDE RULE POLYPHASE K&E KEUFFEL & ESSER MANUA | $9.99 | 01-Apr-2007 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 01-Apr-2007 | 0 |
| VINTAGE SLIDE RULE W/CASE KEUFFEL & ESSER K&E | $9.99 | 27-Apr-2007 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 08-Apr-2007 | 0 |
| "Early Keuffel & Esser 12"" Engineers Slide Ru | $9.99 | 25-Apr-2007 | 0 |
| "3 Vintage Slide Rules - K&E, POST, LAWRENCE E | $9.99 | 18-Apr-2007 | 0 |
| VINTAGE SLIDE RULE W/CASE KEUFFEL & ESSER K&E | $9.99 | 01-Apr-2007 | 0 |
| Vintage Keuffel & Esser Wood Slide Rule w/ lea | $9.99 | 10-Apr-2007 | 0 |
| VINTAGE KEUFFEL SLIDE RULE 68-1617 & POLYPHASE | $9.99 | 01-Apr-2007 | 0 |
| "K&E SLIDERULE, TACRO DRAFTING TOOLS, & RAPIDE | $9.99 | 10-Apr-2007 | 0 |
| "3 Vintage Slide Rules - K&E, POST, LAWRENCE E | $9.99 | 25-Apr-2007 | 0 |
| 1944 K&E Keuffel Esser Slide Rule Instruction | $9.99 | 05-Apr-2007 | 0 |
| "RARE 10"" Keuffel & Esser Slide Rule w/Leathe | $9.99 | 04-Apr-2007 | 0 |
| VERY OLD KEUFFEL & ESSER SLIDE RULE w/LEATHER | $9.99 | 01-Apr-2007 | 0 |
| 1916 Keuffel & Esser Slide Ruler #4058 | $9.99 | 13-Apr-2007 | 0 |
| Vintage K E Keuffel Esser N-4053-3 Slide Rule | $9.99 | 22-Apr-2007 | 0 |
| Keuffel & Esser Log Log Duplex Trig Slide Rule | $9.99 | 25-Apr-2007 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 15-Apr-2007 | 0 |
| K+E Slide Rules Manual | $9.99 | 10-Apr-2007 | 0 |
| VINTAGE K & E POLYPHASE SLIDE RULE 1905 MINT W | $9.99 | 15-Apr-2007 | 0 |
| VINTAGE SLIDE RULE W/CASE KEUFFEL & ESSER K&E | $9.99 | 09-Apr-2007 | 0 |
| Vintage Keuffel & Esser Polyphase Slide Rule 1 | $9.99 | 28-Apr-2007 | 0 |
| 2 Vintage Keuffel & Esser Slide Rules 4081-3 4 | $9.99 | 18-Apr-2007 | 0 |
| Vintage Keuffel & Esser Co. NY Slide Rule Rule | $9.99 | 17-Apr-2007 | 0 |
| Vintage K+E Slide Rule w/ Box + Manual Lot | $9.99 | 15-Apr-2007 | 0 |
| 1900 Keuffel Esser Slide Ruler & Original Leat | $9.99 | 06-Apr-2007 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 29-Apr-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule K E Slide R | $9.99 | 09-Apr-2007 | 0 |
| ANTIQUE KEUFFELD & ESSER SLIDE RULE ( 6/5/1900 | $9.99 | 30-Apr-2007 | 0 |
| SLIDE RULE POLYPHASE K&E KEUFFEL & ESSER MANUA | $9.99 | 08-Apr-2007 | 0 |
| SLIDE RULE POLYPHASE K&E KEUFFEL & ESSER MANUA | $9.99 | 30-Apr-2007 | 0 |
| 1926 Keuffel & Esser K&E Slide Rule Manual Log | $9.99 | 18-Apr-2007 | 0 |
| K&E Wood Slide Rule Log Log Duplex Decitrig w | $9.95 | 20-Apr-2007 | 0 |
| Keuffel & Esser Co. K & E Co. Beginner's Slide | $9.95 | 09-Apr-2007 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE W/CASE | $9.95 | 19-Apr-2007 | 0 |
| Keuffel & Esser Co. K & E Co. Beginner's Slide | $9.95 | 02-Apr-2007 | 0 |
| "KEUFFEL & ESSER Slide Rule 10"" 4092-3 U of M | $9.95 | 19-Apr-2007 | 0 |
| 1947 KEUFFEL & ESSER n4081-3 Slide Rule / case | $9.50 | 27-Apr-2007 | 0 |
| KEUFFEL ESSER SLIDE RULE 4058 PLUS MORE | $9.00 | 05-Apr-2007 | 0 |
| K & E POLYPHASE DUPLEX SLIDE RULE MANUAL 1938 | $8.99 | 15-Apr-2007 | 0 |
| Vintage Keuffel & and Esser Slide Rule # 4088- | $8.99 | 03-Apr-2007 | 0 |
| Keuffel & Esser Co. K & E Co Beginner Slide Ru | $8.95 | 19-Apr-2007 | 0 |
| K&E LOG LOG TRIG SLIDE RULE #4080-3 W/CASE | $8.50 | 26-Apr-2007 | 0 |
| 1938 MANNHEIM SLIDE RULE MANUAL-KEUFFEL&ESSER | $8.50 | 16-Apr-2007 | 0 |
| 1945 K&E Log Log Duplex Decitrig Slide Rule Bo | $8.50 | 22-Apr-2007 | 0 |
| K&E Slide Rule with Manual | $7.99 | 10-Apr-2007 | 0 |
| "Antique Slide Rule, Keuffel & Esser Co. N.Y." | $7.99 | 10-Apr-2007 | 0 |
| Polyphase Slide Rule Manual Keuffel + Esser 19 | $7.99 | 06-Apr-2007 | 0 |
| KEUFFEL & ESSER CO.Engineering Slide Rule | $7.95 | 01-Apr-2007 | 0 |
| Vintage K&E and Lawrence Slide Rule Books. | $6.99 | 08-Apr-2007 | 0 |
| Keuffel & Essler 4088-3 Polyphase Duplex Slide | $6.99 | 05-Apr-2007 | 0 |
| 1947 Vintage Keuffel & Esser SLIDE RULE N4081- | $6.99 | 26-Apr-2007 | 0 |
| Keuffel & Esser Slide Rule-N4081-3-Copyright 1 | $6.95 | 18-Apr-2007 | 0 |
| Slide Rule Manual Keuffel & Esser K&E 1954 pol | $6.00 | 15-Apr-2007 | 0 |
| KEUFFEL & ESSER CO. SLIDE RULE LARGE DESKTOP I | $5.99 | 20-Apr-2007 | 0 |
| "VINTAGE KEUFFEL & ESSER SLIDE RULE DATED MAY | $5.99 | 20-Apr-2007 | 0 |
| Manuel The Mannheim Slide Rule by Keuffel & Es | $5.95 | 18-Apr-2007 | 0 |
| Keuffel &Esser Co New York K & E Slide Rule | $5.00 | 03-Apr-2007 | 0 |
| 1932 K&E Book/Log Log Duplex Slide Rule Manual | $5.00 | 11-Apr-2007 | 0 |
| Vintage Keuffel & Esser Co. NY Slide Rule Rule | $4.99 | 25-Apr-2007 | 0 |
| VINTAGE K & E SLIDE RULE TRIMAN W & G ENGLAND | $4.99 | 23-Apr-2007 | 0 |
| Vintage Keuffel Esser Ruler Decitrig1923 Slide | $4.99 | 29-Apr-2007 | 0 |
| KEUFFEL & ESSER COMPANY ENGINEERING SLIDE RULE | $4.99 | 08-Apr-2007 | 0 |
| "K&E 18"" SLIDE RULE PARAGON MODEL #60 0518-19 | $4.99 | 20-Apr-2007 | 0 |
| Vintage Keuffel and Esser Slide Rule Case and | $4.99 | 05-Apr-2007 | 0 |
| Vintage K&E Bamboo Pocket Slide Rule 4097-B | $4.95 | 27-Apr-2007 | 0 |
| KEUFFEL-ESSER SLIDE RULE. | $4.95 | 23-Apr-2007 | 0 |
| 1900 KEUFFEL & ESSER OAK SLIDE RULE W/CASE 405 | $4.50 | 26-Apr-2007 | 0 |
| 1945 K&E Log Log Decitrig Slide Rule Manual Bo | $3.99 | 01-Apr-2007 | 0 |
| *Beginner's Slide Rule* KUEFFEL & ESSER #4058 | $3.95 | 03-Apr-2007 | 0 |
| Vintage Keuffel Esser Slide Rule Math KE Tool | $3.95 | 24-Apr-2007 | 0 |
| SLIDE RULE MANUAL KEUFFEL &ESSER CO. | $2.99 | 22-Apr-2007 | 0 |
| Keuffel & Esser Slide Rule Model N4053-3 | $0.99 | 02-Apr-2007 | 0 |
| Mannheim Slide Rule Complete Manual Keuffel & | $0.99 | 21-Apr-2007 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE MODEL 4053- | $0.99 | 15-Apr-2007 | 0 |
| SLIDE RULE Manual Doric Kueffel 1947 SC 9068 K | $0.99 | 29-Apr-2007 | 0 |