| Keuffel and Esser |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Apr-2008 |
| ANTIQUE 1881 KEUFFEL & ESSER THACHER SLIDE RUL | $1245.00 | 02-Apr-2008 | 9 |
| "Thacher Calculator slide rule by Keuffel & Es | $898.00 | 27-Apr-2008 | 12 |
| 1966 Keuffel & Esser 68 1400 Analon Slide Rule | $618.00 | 17-Apr-2008 | 13 |
| Giant Keuffel & Esser Co. Slide Rule Teaching | $510.00 | 27-Apr-2008 | 18 |
| K & E 4015-Fuller Slide Rule-STANLEY Maker LON | $482.51 | 25-Apr-2008 | 8 |
| Vintage Keuffel & Esser slide rule model 68140 | $426.77 | 27-Apr-2008 | 12 |
| Thatcher's Calculator/ Sliderule/ Keuffel & Es | $400.00 | 21-Apr-2008 | 3 |
| HUGE K&E KEUFFEL ESSER TEACHING AID DECITRIG S | $382.77 | 21-Apr-2008 | 13 |
| K & E Thacher Calculator slide rule reproducti | $305.00 | 13-Apr-2008 | 11 |
| "Keuffel & Esser N4102 Surveyor's Duplex Slide | $292.50 | 20-Apr-2008 | 16 |
| Vintage Keuffel & Esser Co. Slide Rule # 4065 | $278.00 | 03-Apr-2008 | 9 |
| "Keuffel & Esser Deci-Lon slide rule case, mor | $260.00 | 23-Apr-2008 | 22 |
| "20"" K+E <4080-5> slide rule w/ case, magnifi | $202.50 | 04-Apr-2008 | 10 |
| Keuffel & Esser N4081-5 Slide Rule with Case- | $187.50 | 06-Apr-2008 | 15 |
| "Vintage~KEUFFEL & ESSER CO. Slide Rule, Case | $187.00 | 05-Apr-2008 | 29 |
| K&E 4053-3F Slide Rule - Finely Divided Keuffe | $169.99 | 29-Apr-2008 | 1 |
| K & E 4083-3 Vector Slide Rule + Case & Magnif | $162.50 | 02-Apr-2008 | 16 |
| "Vintage 1947 K&E Keuffel & Esser N4080-5 22"" | $155.50 | 27-Apr-2008 | 19 |
| KEUFFEL&ESSER DECI-LON 68-1130 SLIDE RULE w Ca | $154.50 | 21-Apr-2008 | 12 |
| K+E Associated Spring Corp - Washer Computor S | $152.50 | 29-Apr-2008 | 2 |
| "Keuffel & Esser Deci-Lon slide rule, case, ma | $151.77 | 17-Apr-2008 | 12 |
| Keuffel & Esser 4070-3S 4080-3S 4088-S Slide R | $151.77 | 21-Apr-2008 | 8 |
| Large Vintage Slide Rule / Keuffel & Esser | $147.58 | 06-Apr-2008 | 28 |
| "Keuffel & Esser - K&E - Slide Rule 4081-5 22" | $137.72 | 02-Apr-2008 | 12 |
| KEUFFEL & ESSER DECI-LON 68-1130 SLIDE RULE w/ | $131.50 | 02-Apr-2008 | 9 |
| EARLY KEUFFEL & ESSER SLIDE RULE NO 4071 T - 1 | $127.50 | 29-Apr-2008 | 9 |
| K& E KEUFFEL & ESSER DECI LON 68-1100 SLIDE RU | $123.00 | 02-Apr-2008 | 19 |
| K&E DECI-LON slide rule extremely nice! with b | $111.33 | 02-Apr-2008 | 19 |
| "K+E Decilon 10 68-1100 slide rule w/case, man | $95.00 | 18-Apr-2008 | 1 |
| Slide Rule K+E model 4071T | $88.91 | 12-Apr-2008 | 9 |
| K & E Deci-Lon 68 1100 Duplex Slide Rule | $85.00 | 21-Apr-2008 | 8 |
| "5 1/2"" K&E Keuffel & Esser Slide Rule w/Magn | $82.99 | 08-Apr-2008 | 23 |
| "K+E Decilon 10 68-1100 slide rule w/case, man | $81.18 | 11-Apr-2008 | 1 |
| vintage slide rule w/leather case keuffel & es | $79.00 | 29-Apr-2008 | 7 |
| vintage K+E 4081-3 Slide rule with box case an | $76.00 | 03-Apr-2008 | 29 |
| "VINTAGE K&E KEUFFEL & ESSER GP12 SLIDE RULE/C | $76.00 | 20-Apr-2008 | 15 |
| Keuffel & Esser Vintage Pocket Slide Rule 4181 | $75.01 | 20-Apr-2008 | 18 |
| Vintage Demonstration Slide Rule by Keuffel & | $75.00 | 02-Apr-2008 | 3 |
| "KEUFFEL ESSER K&E 4181-3 SLIDE RULE BOX, PAPE | $75.00 | 07-Apr-2008 | 2 |
| Vintage Keuffel Esser K & E Slide Rule Slideru | $71.81 | 21-Apr-2008 | 17 |
| 1947 K E KEUFFEL ESSER 4081-3 SLIDE RULE CASE | $70.00 | 05-Apr-2008 | 13 |
| K+E Model 68-1100 Slide Rule with case and cli | $66.00 | 20-Apr-2008 | 17 |
| K+E Decilon 68-1100 slide rule with Case & Boo | $62.00 | 04-Apr-2008 | 21 |
| Keuffel & Esser Co Vintage Slide Rule W/Case # | $62.00 | 30-Apr-2008 | 10 |
| K&E KEUFFEL & ESSER DECI LON 68-1100 SLIDE RUL | $61.00 | 21-Apr-2008 | 11 |
| K&E KEUFFEL & ESSER CO. DECI-LON 10 SLIDE RULE | $60.40 | 17-Apr-2008 | 10 |
| Keuffel & Esser Slide Rule 1947 | $59.95 | 28-Apr-2008 | 1 |
| "Keuffel & Esser K&E 4083-3 vector slide rule, | $59.00 | 12-Apr-2008 | 8 |
| Keuffel & Esser 68 1100 Deci Lon Slide Rule | $57.77 | 27-Apr-2008 | 8 |
| K&E Slide Rule Deci-Lon 10 near MINT condition | $56.77 | 07-Apr-2008 | 13 |
| "K&E 4081-3 SLIDE RULE WITH CASE, BOX, MANUAL- | $55.87 | 08-Apr-2008 | 10 |
| K & E SLIDE RULE WITH MANUAL & CASE | $55.02 | 19-Apr-2008 | 6 |
| 1908 K & E SLIDE RULE & CASE Outstanding Condi | $54.51 | 24-Apr-2008 | 7 |
| "K+E Slide Rule Set, 1947/1961" | $52.99 | 10-Apr-2008 | 5 |
| Keuffel & Esser K&E N4053-5 Slide Rule Near Mi | $52.99 | 20-Apr-2008 | 9 |
| "Vintage Keuffel & Esser K&E GP12 Slide Rule C | $51.50 | 12-Apr-2008 | 11 |
| KEUFFEL & ESSER SLIDE RULE 4081 NEAR MINT | $51.00 | 02-Apr-2008 | 7 |
| "10 5/8"" Keuffel & Esser Slide Rule w/Magnifi | $51.00 | 29-Apr-2008 | 13 |
| K & E KEUFFEL & ESSER 1961 SLIDE RULE DECI-LON | $50.99 | 28-Apr-2008 | 9 |
| K & E Slide Rule Magnifier Original Box Chamoi | $50.00 | 20-Apr-2008 | 5 |
| K& E KEUFFEL & ESSER DECI LON 68-1100 SLIDE RU | $48.55 | 10-Apr-2008 | 10 |
| NICE SMALL KEUFFEL & ESSER LOG SLIDE RULE/CASE | $48.22 | 20-Apr-2008 | 5 |
| Vintage Slide Rule KEUFFEL & ESSER Co 1961 era | $47.51 | 03-Apr-2008 | 11 |
| Vintage K&E Deci-lon Slide Rule/Screwdriver/Ca | $46.00 | 15-Apr-2008 | 6 |
| THREE Early K & E ALL WOOD SLIDE RULES | $46.00 | 13-Apr-2008 | 12 |
| K+E LOG DUPLEX DECITRIG SLIDE RULE 4081-3S W/ | $45.98 | 13-Apr-2008 | 5 |
| 1900 Keuffel & Esser Co. Slide Rule with case | $45.00 | 25-Apr-2008 | 16 |
| Keuffel & Esser Slide Rule With Case 681608 Ex | $44.60 | 13-Apr-2008 | 8 |
| Keuffel & Esser K E Slide Rule 4181-1 1C W BOX | $42.22 | 27-Apr-2008 | 10 |
| "Vintage K & E Slide Rule Lot 20"" + 6"" w/ Ma | $40.99 | 22-Apr-2008 | 5 |
| VINTAGE K & E LOG LOG DUPLEX TRIG SLIDE RULE 4 | $40.00 | 20-Apr-2008 | 6 |
| Keuffel and Esser 4181-3 Slide Rule with Case- | $38.00 | 06-Apr-2008 | 7 |
| K&E Slide rule 50 years+ old? w/manual | $37.99 | 14-Apr-2008 | 9 |
| Keuffel & Esser 4181-1 Pocket Slide Rule w/cas | $37.97 | 14-Apr-2008 | 12 |
| "K&E 6"" Model 4181-1 Duplex Decitrig Pocket S | $37.50 | 28-Apr-2008 | 9 |
| "Keuffel & Esser 4088-5 Slide Rule with Case 2 | $37.37 | 20-Apr-2008 | 5 |
| 1947 Keuffel & Esser K&E Pocket Slide Rule 418 | $37.00 | 26-Apr-2008 | 5 |
| Vintage K&E Slide Rule 4081 3-S With Leather C | $36.01 | 15-Apr-2008 | 7 |
| K&E Keuffel & Esser Cooke Radio Slide Rule 413 | $33.00 | 07-Apr-2008 | 9 |
| KEUFFEL & ESSER SLIDE RULE MANUAL AND RULER ** | $33.00 | 23-Apr-2008 | 10 |
| Working Slide Rule Tie Bar K&E Post Dietzgen E | $32.37 | 14-Apr-2008 | 7 |
| KEUFFEL & ESSER CO. VINTAGE SLIDE RULE 4081-3 | $32.00 | 07-Apr-2008 | 10 |
| 1947 K&E Keuffel & Esser Slide Rule w/Case 418 | $31.99 | 08-Apr-2008 | 5 |
| KEUFFEL & ESSER SLIDE RULE INDICATORS MIXED LO | $31.00 | 14-Apr-2008 | 12 |
| K&E Keuffel & Esser Slide Rule 4071-3 + Manual | $31.00 | 17-Apr-2008 | 8 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE MODEL 4088 | $31.00 | 09-Apr-2008 | 8 |
| Keuffel & Esser 4053-5 Slide Rule-Scales label | $30.95 | 13-Apr-2008 | 5 |
| 1947 K+E KEUFFEL ESSER 4081-3 SLIDE RULE+CASE- | $29.99 | 16-Apr-2008 | 1 |
| Slide Rule - Keuffel & Esser | $29.99 | 16-Apr-2008 | 10 |
| Keuffel & Esser Log Log Duplex Pocket Slide Ru | $29.62 | 25-Apr-2008 | 5 |
| K+E Log Log Duplex Decitrig 4181-3 slide rule | $29.00 | 11-Apr-2008 | 2 |
| "Keuffel & Esser K&E 4093-3 Vector slide rule, | $28.77 | 07-Apr-2008 | 5 |
| K & E SLIDE RULE WITH -BOX - MANUAL & CASE- 40 | $28.00 | 20-Apr-2008 | 5 |
| Keuffel & Esser Co. 681210 Slide Rule Copyrigh | $27.55 | 06-Apr-2008 | 10 |
| Vintage Slide Rule Keuffel & Esser Excellent C | $27.00 | 14-Apr-2008 | 15 |
| 50s KEUFFEL & ESSER 4181 3 Slide Rule W Case N | $27.00 | 21-Apr-2008 | 12 |
| Keuffel and Esser Co. N.Y. Slide Rule w/ Leath | $26.93 | 30-Apr-2008 | 5 |
| "SLIDE RULE, 12 1/2 IN. KEUFFEL & ESSER, 1947" | $26.89 | 12-Apr-2008 | 3 |
| K & E Log Log Duplex Decitrig Slide Rule Box P | $26.50 | 09-Apr-2008 | 6 |
| 1913 KEUFFEL & ESSER K&E 4053-2 SLIDE RULE 8 I | $26.25 | 05-Apr-2008 | 2 |
| Keuffel & Esser 4081-3 SLIDE RULE & LEATHER CA | $26.00 | 06-Apr-2008 | 2 |
| K & E Slide Rule 4091-3 with case | $26.00 | 23-Apr-2008 | 6 |
| "Keuffel Esser 6"" slide rule in pouch w/box & | $26.00 | 05-Apr-2008 | 4 |
| KEUFFEL & ESSER SLIDE RULE INDICATORS | $26.00 | 14-Apr-2008 | 10 |
| Keuffel & Esser Slide Rule-- Double Log Duplex | $25.49 | 07-Apr-2008 | 11 |
| "'36 K&E HARDCOVER CATALOG SURVEYING,SLIDE RUL | $25.00 | 24-Apr-2008 | 1 |
| K&E KEUFFEL ESSER 4092-3 LOG LOG DUPLEX SLIDE | $25.00 | 20-Apr-2008 | 1 |
| K & E SLIDE RULE MERCHANTS MODEL 4095-3 | $23.27 | 15-Apr-2008 | 4 |
| K & E DECILON Slide Rule Indicator Cursor repl | $22.48 | 09-Apr-2008 | 8 |
| Antique Keuffel & Esser 4095-3 Slide Rule Pat | $21.71 | 06-Apr-2008 | 6 |
| KEUFFEL & ESSER 4181-3 Slide Rule w/Case-Box-M | $21.50 | 22-Apr-2008 | 5 |
| **NEW** KEUFFEL & ESSER SLIDE RULE RULER + LEA | $21.50 | 15-Apr-2008 | 18 |
| Keuffel & Esser Co. Slide Rule N4081-3 Copyrig | $21.01 | 04-Apr-2008 | 8 |
| Pocket slide rules by Keuffel & Esser Co. leat | $20.51 | 25-Apr-2008 | 8 |
| "K&E WYTEFACE OPTICAL SLIDE RULE 20""" | $20.50 | 14-Apr-2008 | 2 |
| VINTAGE K & E KEUFFEL & ESSER FAVORITE SLIDE R | $20.50 | 18-Apr-2008 | 3 |
| KEUFFEL ESSER COMPANY SLIDE RULER | $20.50 | 18-Apr-2008 | 7 |
| K & E Slide Rule Case ONLY Brown Leather 12-1/ | $20.50 | 16-Apr-2008 | 3 |
| Keuffel Esser log log duplex slide rule 4092-3 | $20.50 | 20-Apr-2008 | 2 |
| Keuffel & Esser Log Log Duplex DeciTrig Slide | $20.49 | 13-Apr-2008 | 2 |
| vintage Keuffel & Esser 4081-3 slide rule & ca | $20.00 | 13-Apr-2008 | 2 |
| Vintage Keuffel Esser K&E Slide Rule Sliderule | $20.00 | 27-Apr-2008 | 14 |
| Vintage Slide Rule Keuffel & Esser Leather Cas | $19.99 | 10-Apr-2008 | 1 |
| Keuffel & Esser Slide Rule Leather case Instru | $19.99 | 01-Apr-2008 | 1 |
| 1947 K E KEUFFEL ESSER 4081-3 SLIDE RULE CASE | $19.99 | 04-Apr-2008 | 2 |
| K&E 4081-3 LOG LOG DUPLEX DECITRIG SLIDE RULE | $19.99 | 07-Apr-2008 | 1 |
| Bakelite Plastic '47 K E Keuffel Esser 9081 Sl | $19.75 | 29-Apr-2008 | 3 |
| K & E Keuffel & Esser Co. Slide Rule in Case 1 | $19.50 | 07-Apr-2008 | 9 |
| K&E Keuffel & Esser Slide Rule w/Case N4081-3 | $19.50 | 08-Apr-2008 | 4 |
| Vintage Keuffer& Esser Polyphase Duplex Slide | $19.41 | 24-Apr-2008 | 5 |
| VINTAGE LEATHER CASED KEUFFEL & ESSER CO.SLIDE | $18.99 | 17-Apr-2008 | 8 |
| "K & E ""DORIC"" SLIDE RULE and LEATHER CARRY | $18.50 | 21-Apr-2008 | 5 |
| Keuffel & Esser Slide Rules Instruction Manual | $18.50 | 20-Apr-2008 | 7 |
| 2 K & E Co. New York and 1 Denmark Diwa Slide | $18.27 | 30-Apr-2008 | 6 |
| Vintage Keuffel & Esser Co. Slide Rule Pat. Ap | $18.00 | 09-Apr-2008 | 5 |
| K&E Slide Rules HARDCOVER BOOK Log Duplex Deci | $18.00 | 02-Apr-2008 | 5 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 4031 PAT JU | $17.34 | 25-Apr-2008 | 4 |
| K & E No. 4081-3 Slide Rule. Needs 2 Cursor Sc | $17.01 | 20-Apr-2008 | 5 |
| VINTAGE K&E SLIDE RULE 4181-3 w/CASE/BOOK | $16.75 | 08-Apr-2008 | 8 |
| Vintage K & E Slide Rule | $16.71 | 16-Apr-2008 | 5 |
| VINTAGE 1947 KEUFFEL & ESSER SLIDE RULE & CASE | $16.50 | 01-Apr-2008 | 5 |
| Keuffel & Esser Vintage Slide Rule Model 4081- | $16.50 | 19-Apr-2008 | 3 |
| K & E Slide Rule Indicator Cursor replacement | $16.35 | 09-Apr-2008 | 5 |
| 1947 KEUFFEL ESSER Log Duplex Decitrig Slide R | $16.27 | 17-Apr-2008 | 4 |
| Vintage Keuffel & Esser Co. Slide Rule & Manua | $16.00 | 16-Apr-2008 | 3 |
| Beautiful Vintage Keuffel & Esser 4081 - 3 Sli | $15.79 | 09-Apr-2008 | 5 |
| KEUFFEL & ESSER SLIDE RULE & CASE #4080-3 ESTA | $15.75 | 29-Apr-2008 | 3 |
| vintage Keuffel & Esser slide rule 4053-3 with | $15.50 | 13-Apr-2008 | 4 |
| "4 Slide Rules - K&E, Dietzgen, Lawrence and B | $15.50 | 26-Apr-2008 | 7 |
| VINTAGE KEUFFEL & ESSER POLYPHASE SLIDE RULE P | $15.50 | 24-Apr-2008 | 5 |
| vintage KEUFFEL & ESSER SLIDE RULE RULER + LEA | $15.50 | 08-Apr-2008 | 9 |
| Slide Rule K+E model 4081-3 Log Log Duplex Dec | $15.50 | 19-Apr-2008 | 4 |
| K&E Keuffel & Esser Slide Rule w/Case 4053-3 | $15.50 | 13-Apr-2008 | 2 |
| K+E No. 4081-3 Log Duplex Decitrig Slide Rule | $15.50 | 14-Apr-2008 | 16 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE | $15.50 | 16-Apr-2008 | 3 |
| Keuffel & Esser Slide Rule With Instructions | $15.50 | 13-Apr-2008 | 5 |
| Log Log Duplex Trig Slide Rule Keuffel & Esser | $15.50 | 15-Apr-2008 | 3 |
| Vintage 1947 Keuffel Esser Co. Slide Rule N408 | $15.50 | 27-Apr-2008 | 3 |
| Slide Rule by Keuffel and Esser w/ Leather Cas | $15.50 | 30-Apr-2008 | 5 |
| KEUFFEL & ESSER SLIDE RULE #4080 & CASE & MANU | $15.49 | 16-Apr-2008 | 2 |
| Keuffel & Esser Co. Slide Rule w/ Case & Instr | $15.11 | 28-Apr-2008 | 2 |
| KEUFFEL & ESSER CO MODEL 4181 3 SLIDE RULE | $15.01 | 24-Apr-2008 | 3 |
| Vintage Slide Rule Keuffel Manheim Dietzgen Fr | $15.00 | 20-Apr-2008 | 13 |
| Keuffel and Esser 4181-3 Slide Rule + Leather | $15.00 | 12-Apr-2008 | 2 |
| "K&E Slide Rule (4181-3) With Green Leather Ca | $15.00 | 28-Apr-2008 | 1 |
| K&E SLIDE RULE KEUFFEL & ESSER W CASE ORIG BOX | $14.55 | 17-Apr-2008 | 2 |
| K & E No.4098A Miniature Slide Rule (Fafnir Be | $14.00 | 06-Apr-2008 | 5 |
| Keuffel & Esser Co. Slide Rule Instruction Man | $13.51 | 11-Apr-2008 | 6 |
| COLLECTIBLE VINTAGE DIETZGEN COMMANDER & K&E S | $13.50 | 29-Apr-2008 | 2 |
| K&E Keuffel & Esser 4083-3 Vector Slide Rule w | $13.27 | 07-Apr-2008 | 3 |
| Vintage Keuffel & Esser Co Slide Rule K-12 Cas | $13.00 | 27-Apr-2008 | 5 |
| Keuffel & Esser mannheim antique Slide Rule w/ | $13.00 | 04-Apr-2008 | 7 |
| Vintage 1930s Keuffel Esser Slide Rule #N4041 | $12.50 | 10-Apr-2008 | 4 |
| Slide Rule K+E model 4083-3 Log Log Duplex Vec | $12.50 | 19-Apr-2008 | 2 |
| "Keuffel & Esser - K&E - Slide Rule 4081-3 12" | $12.50 | 20-Apr-2008 | 2 |
| Keuffel & Esser Slide Rule and case | $12.50 | 08-Apr-2008 | 5 |
| 1943 KEUFFEL & ESSER SLIDE RULE MANUAL No. 408 | $12.50 | 06-Apr-2008 | 10 |
| 1962 K&E Slide Rules Deci-Lon Instruction Manu | $12.49 | 30-Apr-2008 | 5 |
| "Keuffel & Esser 4051 20"" Slide Rule with Cas | $12.11 | 13-Apr-2008 | 3 |
| K&E KEUFFEL & ESSER CO. SLIDE RULE.with case ( | $12.00 | 16-Apr-2008 | 4 |
| "K+E slide rule, case, manual N 4081" | $11.75 | 20-Apr-2008 | 3 |
| Vintage Slide Rule W/Case Keuffel & Esser Co. | $11.71 | 09-Apr-2008 | 5 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE K&E MODEL 4 | $11.50 | 01-Apr-2008 | 3 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE MODEL 4088 | $10.50 | 21-Apr-2008 | 6 |
| Keuffel & esser slide rule 4080-3 duplex trig | $10.50 | 21-Apr-2008 | 2 |
| 2 Vintage Slide Rules Keuffel & Esser + Post | $10.50 | 16-Apr-2008 | 3 |
| 1927 KEUFFEL & ESSER MANNHEIM SLIDE RULE MANUA | $10.50 | 16-Apr-2008 | 4 |
| Antique SLIDE RULE Keuffel & Esser Polyphase B | $10.50 | 29-Apr-2008 | 9 |
| "12 1/2"" Keuffel & Esser Slide Rule With Case | $10.50 | 29-Apr-2008 | 2 |
| Antique Keuffel & Esser K&E 4056 Favorite Slid | $10.50 | 14-Apr-2008 | 2 |
| Vintage Keuffel & Esser Co. NY Slide Rule w/Ca | $10.49 | 27-Apr-2008 | 3 |
| VINTAGE AMERICAN KEUFFEL & ESSER CO. N.Y. SLID | $10.49 | 21-Apr-2008 | 2 |
| K & E model 4058W Slide Rule (NM) | $10.45 | 02-Apr-2008 | 2 |
| Vintage Keuffel & Esser Wooden Slide Ruler W/ | $10.00 | 20-Apr-2008 | 1 |
| VINTAGE KEUFFEL & ESSER K&E SLIDE RULE 909308 | $9.99 | 17-Apr-2008 | 1 |
| Keuffel & Esser K12 Prep Slide Rule | $9.99 | 03-Apr-2008 | 1 |
| Keuffel & Esser Slide Rule Sliderule 4083 Keuf | $9.99 | 20-Apr-2008 | 1 |
| Vintage Polyphase Slide Rule Keuffel & Esser B | $9.99 | 29-Apr-2008 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 4053-3 & CA | $9.99 | 19-Apr-2008 | 1 |
| antique KUEFFEL ESSER N 4053 -3 SLIDE RULE PAT | $9.99 | 05-Apr-2008 | 2 |
| Keuffel & Esser~1939 Manual~SLIDE RULES BOOKLE | $9.99 | 23-Apr-2008 | 2 |
| 1908 Slide Rule - Kuffel & Esser Co. NY w/Leat | $9.99 | 21-Apr-2008 | 2 |
| 1947 Keuffel & Esser Doric Slide rule & Staedt | $9.99 | 13-Apr-2008 | 1 |
| KEUFFEL & ESSER SLIDE RULE w CASE | $9.99 | 30-Apr-2008 | 1 |
| VINTAGE KEUFFEL& ESSER SLIDE RULER 3 BRUNING A | $9.99 | 02-Apr-2008 | 1 |
| Vintage Geometry Ruler and Keuffel & Esser Sli | $9.99 | 14-Apr-2008 | 2 |
| Keuffel & Esser 4088-3 Slide Rule + Case- Earl | $9.99 | 06-Apr-2008 | 1 |
| Vintage Wood / Plastic Keuffel & Esser Co NY S | $9.99 | 24-Apr-2008 | 1 |
| Keuffel Esser Slide Rule Sliderule 4080-3 Calc | $9.99 | 15-Apr-2008 | 1 |
| KEUFFEL & ESSER CO. SLIDE RULE COPYRIGHT 1947 | $9.99 | 13-Apr-2008 | 1 |
| Slide Rule Keuffel Esser Sliderule 4081-3 Log | $9.99 | 14-Apr-2008 | 1 |
| "Keuffel & Esser Co. Slide Rule 4081-3,& 81985 | $9.99 | 06-Apr-2008 | 1 |
| "Keuffel & Esser, NY Slide Rule w Case USA Pat | $9.99 | 22-Apr-2008 | 1 |
| Vintage Keuffel & Esser Co. Slide Rule #4095-3 | $9.99 | 11-Apr-2008 | 1 |
| Slide Rule K+E 4088-3 | $9.99 | 13-Apr-2008 | 1 |
| 1950's Keuffel & Esser Catalog Drafting Tools | $9.99 | 23-Apr-2008 | 1 |
| KEUFFEL & ESSER #4056 FAVORITE SLIDE RULE RULE | $9.99 | 29-Apr-2008 | 1 |
| "K & E--JUNE 5, 1900 SLIDE RULE (N-4053-3)?" | $9.99 | 25-Apr-2008 | 1 |
| 2 Lot-1915 K & E 4053-3-SLIDE RULE-AREL GW Pho | $9.95 | 22-Apr-2008 | 1 |
| "VINTAGE, SLIDE RULE,W/CASE, HEUFFEL & ESSER C | $9.95 | 20-Apr-2008 | 1 |
| 1955 K+E Keuffel Esser Slide Rule Book | $9.95 | 29-Apr-2008 | 1 |
| ANTIQUE 1900'S KEUFFEL & ESSER WOODEN SLIDE RU | $9.50 | 27-Apr-2008 | 1 |
| Keuffel and Esser Co. Wooden Slide Rule and Ca | $9.50 | 01-Apr-2008 | 2 |
| KEUFFEL & ESSER CO. VINTAGE BEGINNERS SLIDE RU | $9.50 | 07-Apr-2008 | 1 |
| Antique Keuffel & Esser Co Mahogany Slide Rule | $9.50 | 16-Apr-2008 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 4053-3 | $9.49 | 26-Apr-2008 | 2 |
| Vintage Slide Rule Keuffel & Esser Leather Cas | $9.25 | 19-Apr-2008 | 2 |
| Vintage K&E Slide Rule 4081-3 with Case! | $9.05 | 12-Apr-2008 | 3 |
| Vintage Keuffel & Esser Slide Rule Pat 1924 | $9.00 | 10-Apr-2008 | 2 |
| VINTAGE K&E 4081-3 KEUFFEL & ESSER SLIDE RULE | $9.00 | 13-Apr-2008 | 1 |
| DEUFFEL & ESSER CO. POCKET SLIDE RULE #4098 A | $8.99 | 04-Apr-2008 | 1 |
| Original K&E Log Log Duplex Decitrig Slide Rul | $8.50 | 12-Apr-2008 | 6 |
| KEUFFEL & ESSER Co. SLIDE RULE #4053-3 w/Leath | $8.27 | 07-Apr-2008 | 4 |
| Original Keuffel Esser K&E N4053 Slide Rule Ma | $8.00 | 06-Apr-2008 | 1 |
| Vintage KEUFFEL & ESSER CO> N.Y> Slide Rule-Le | $8.00 | 15-Apr-2008 | 3 |
| K&E KEUFFEL & ESSER SLIDE RULE NO 4058 W BEGGI | $7.99 | 21-Apr-2008 | 1 |
| Vintage Keuffel & Esser Slide Rule Plastic/Lea | $7.50 | 15-Apr-2008 | 3 |
| Vintage Keuffel & Esser Students Slide Rule 40 | $7.50 | 01-Apr-2008 | 1 |
| Keuffel & Esser Co #4041 Slide Rule Mannheim | $7.17 | 11-Apr-2008 | 2 |
| Slide Rule Keuffel & Esser Beginner's 4058 W 1 | $7.00 | 10-Apr-2008 | 2 |
| Keuffel & Esser Slide Rule 4081-3 w/Hard Case | $6.99 | 28-Apr-2008 | 1 |
| *Vintage*K&E Beginners SLIDE RULE*Case*N4058W* | $6.99 | 24-Apr-2008 | 1 |
| Old 1928 Keuffel & Esser Beginners Slide Rule | $6.95 | 14-Apr-2008 | 1 |
| Vintage Keuffel & Esser Co. Beginner's Slide R | $6.51 | 13-Apr-2008 | 2 |
| KEUFFEL & ESSER CO N.Y. OLD SLIDE RULER WITH C | $6.15 | 04-Apr-2008 | 4 |
| VINTAGE SLIDE RULER SET KEUFFEL & ESSER CO. NY | $6.00 | 20-Apr-2008 | 1 |
| Rare K & E slide rule 4070-3 US Navy 528 EIC K | $6.00 | 26-Apr-2008 | 1 |
| OLD K E KEUFFEL & ESSER CO POLYPHASE DUPLEX SL | $5.99 | 12-Apr-2008 | 1 |
| K & E SLIDE RULE WITH LEATHER CASE 4080-3 | $5.99 | 27-Apr-2008 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE RULER CASE | $5.50 | 14-Apr-2008 | 3 |
| Slide Rule (Miniature) K & E with Case | $5.50 | 27-Apr-2008 | 4 |
| Keuffel & Esser Slide Rule 4058W Orig Case & I | $5.50 | 05-Apr-2008 | 2 |
| K&E Keuffel & Esser Deci-Lon Sliderule Slide r | $5.50 | 15-Apr-2008 | 2 |
| "Pr of Keuffel&EsslerCo. Slide Rules,2 Sizes.I | $5.49 | 29-Apr-2008 | 2 |
| Vintage K & E Beginner's Slide Rule #4058W | $5.01 | 07-Apr-2008 | 4 |
| old Keuffel & Esser Co. Professional Slide Rul | $5.00 | 01-Apr-2008 | 1 |
| 1947 K & E Keuffer Esser Slide Rule Manual No. | $5.00 | 18-Apr-2008 | 1 |
| Antique SLIDE RULE Keuffel Esser NY 1908 Vinta | $4.99 | 04-Apr-2008 | 1 |
| Log Log Duplex SLIDE RULE MANUAL Keuffel & Ess | $4.99 | 22-Apr-2008 | 1 |
| SUPER VINTAGE Keuffel & Esser Co. Student's Sl | $4.99 | 20-Apr-2008 | 1 |
| Antique 1928 Manheim Type SLIDE RULE by Keuffe | $4.99 | 09-Apr-2008 | 1 |
| K&E 4081 Slide Rule Keuffel Esser with leather | $4.99 | 19-Apr-2008 | 1 |
| 1947 K&E Keuffel & Esser Slide Rule with Case | $4.95 | 27-Apr-2008 | 1 |
| Vintage K&E Slide Rule 631928 with Case! | $4.95 | 12-Apr-2008 | 1 |
| K&E Slide Rule Manual 1948 | $4.77 | 20-Apr-2008 | 1 |
| K&E Polyphase Duplex Decitrig Slide Rule 4071 | $4.25 | 19-Apr-2008 | 2 |
| Slide Rule K+E model 4097D | $4.00 | 01-Apr-2008 | 1 |
| "Vintage Keuffel & Esser Slide Rule # 400 & Bo | $3.99 | 13-Apr-2008 | 1 |
| Keuffel Esser ORIGINAL 1952 MANUAL for 4081 Sl | $3.95 | 27-Apr-2008 | 3 |
| "Keuffel & Esser #4041 Mannheim Slide Rule, wi | $3.25 | 02-Apr-2008 | 2 |
| Vintage Keuffel Esser Co. Slide Rule | $2.30 | 07-Apr-2008 | 3 |
| Antique Slide Rule K+E model 4053-3 | $2.25 | 03-Apr-2008 | 2 |
| 1940 Lawrence Slide Rule Instruction Book Engi | $1.80 | 07-Apr-2008 | 3 |
| Vintage K&E Keuffel & Esser 4053-3 Slide Rule | $1.80 | 21-Apr-2008 | 4 |
| Two Slide Rules: Fredrick Post & Kueffel & Ess | $1.25 | 28-Apr-2008 | 3 |
| KEUFFEL & ESSER CO.BEGINNERS SLIDE RULE CONVER | $0.99 | 01-Apr-2008 | 1 |
| KEUFFEL & ESSER WOOD SLIDE RULE IN ORIGINAL CA | $0.99 | 02-Apr-2008 | 1 |
| K+E Slide Rule Manual Log Log Duplex Trig No. | $0.99 | 14-Apr-2008 | 2 |
| Old Keuffel & Esser Slide Rule Used with Leath | $0.99 | 08-Apr-2008 | 1 |
| KEUFFEL & ESSER K&E . SLIDE RULE 4053-3 WITH C | $0.99 | 01-Apr-2008 | 1 |
| K E Log Log Duplex Decitrig Slide Rule Manual | $0.98 | 05-Apr-2008 | 1 |
| Vintage WWII Graphical Firing Table K E Slide | $189.00 | 07-Apr-2008 | 0 |
| K&E 4041F Slide Rule - Finely Divided - Rare E | $159.99 | 29-Apr-2008 | 0 |
| VINTAGE KEUFFEL & ESSER CO. K E SLIDE RULERS a | $125.00 | 17-Apr-2008 | 0 |
| VINTAGE KEUFFEL & ESSER CO. K E SLIDE RULERS a | $125.00 | 19-Apr-2008 | 0 |
| VINTAGE KEUFFEL & ESSER CO. K E SLIDE RULERS a | $125.00 | 13-Apr-2008 | 0 |
| K&E 4139 Cooke Radio Slide Rule w/ Manual - Ni | $99.99 | 29-Apr-2008 | 0 |
| Doric K&E slide ruler Apollo Gemini NASA engin | $99.00 | 12-Apr-2008 | 0 |
| Doric K&E slide ruler Apollo Gemini NASA engin | $99.00 | 19-Apr-2008 | 0 |
| Doric K&E slide ruler Apollo Gemini NASA engin | $99.00 | 17-Apr-2008 | 0 |
| "K+E Decilon 10 68-1100 slide rule w/case, man | $90.00 | 04-Apr-2008 | 0 |
| Keuffel & Esser Slide Rule 1947 | $75.00 | 21-Apr-2008 | 0 |
| KEUFFEL & ESSER 4181-3 Slide Rule w/Case-Box-M | $49.99 | 17-Apr-2008 | 0 |
| VINTAGE KEUFFEL & ESSER Co. SLIDE RULE # 68206 | $49.99 | 20-Apr-2008 | 0 |
| K&E Slide Rule WITH K&E Engineer 8 scale ruler | $39.99 | 28-Apr-2008 | 0 |
| 1900 Pat. Keuffel & Esser Slide Rule & Case | $24.99 | 03-Apr-2008 | 0 |
| vintage keuffel & Esser slide rule #4080-03 NI | $20.00 | 27-Apr-2008 | 0 |
| vintage keuffel & Esser slide rule #4080-03 NI | $20.00 | 20-Apr-2008 | 0 |
| VINTAGE KEUFFEL ESSER CO IVORY SLIDE RULER 192 | $19.99 | 29-Apr-2008 | 0 |
| Vtg KEUFFEL & ESSER Beginner SLIDE RULE N4058W | $19.95 | 02-Apr-2008 | 0 |
| 1955 K+E Keuffel Esser Slide Rule Book | $16.95 | 27-Apr-2008 | 0 |
| 1900 Pat. Keuffel & Esser Slide Rule & Case | $14.99 | 17-Apr-2008 | 0 |
| VINTAGE K+E KEUFFEL & ESSER POCKET SLIDE RULE | $14.95 | 21-Apr-2008 | 0 |
| Vintage Keuffel & Esser Polyphase Slide Rule & | $12.00 | 30-Apr-2008 | 0 |
| VINTAGE 1936 KEUFFEL & ESSER 4088-3 SLIDE RULE | $10.50 | 21-Apr-2008 | 0 |
| Beginner's Slide Rule made by Keuffer & Esser | $10.00 | 26-Apr-2008 | 0 |
| Vintage K&E Keuffel Esser Slide Rule w/Case 40 | $9.99 | 04-Apr-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 23-Apr-2008 | 0 |
| "Vintage Keuffel & Esser 12.5"" Slide Rule Lea | $9.99 | 17-Apr-2008 | 0 |
| Vintage Keuffel & Esser Co. Beginner's Slide R | $9.99 | 06-Apr-2008 | 0 |
| "Keuffel & Esser K&E Slide Rule , Mannheim dat | $9.99 | 13-Apr-2008 | 0 |
| ANTIQUE K & E CO.N.Y..SLIDE RULE W/CASE & GEN. | $9.99 | 17-Apr-2008 | 0 |
| Set Keuffel & Esser 1922 Drafting Tools & Slid | $9.99 | 18-Apr-2008 | 0 |
| 1939 KEUFFEL & ESSER SLIDE RULE MANUAL Log Log | $9.99 | 13-Apr-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 02-Apr-2008 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 4053-3 | $9.99 | 19-Apr-2008 | 0 |
| Vintage Keuffel & Esser Co. NY Slide Rule Rule | $9.99 | 19-Apr-2008 | 0 |
| K&E KEUFFEL & ESSER SLIDE RULE 4058W & CASE | $9.99 | 03-Apr-2008 | 0 |
| Keuffel & Esser 4088-3 and 4058W slide rules + | $9.99 | 27-Apr-2008 | 0 |
| K&E Slide rule & Case-Give away for Holidays.. | $9.99 | 14-Apr-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 30-Apr-2008 | 0 |
| K & E Log Duplex Decitrig Slide Rule 4081-3S w | $9.99 | 15-Apr-2008 | 0 |
| Keuffel & Esser Slide Rule N 4053-3 With Case | $9.99 | 06-Apr-2008 | 0 |
| VINTAGE KEUFFEL AND ESSER SLIDE RULE K&E MODEL | $9.99 | 01-Apr-2008 | 0 |
| K&E KEUFFEL & ESSER CO. SLIDE RULE.with case ( | $9.99 | 03-Apr-2008 | 0 |
| "K+E LOG DUPLEX SLIDE DECITRIG RULE MANUAL, N4 | $9.99 | 15-Apr-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 16-Apr-2008 | 0 |
| "DUAL 10""/5"" Slide Rule, Manual, K & E Instr | $9.99 | 16-Apr-2008 | 0 |
| 1947 K&E Keuffel & Esser Slide Rule w/Case 418 | $9.99 | 13-Apr-2008 | 0 |
| Vintage Keuffel & Esser Co. NY Slide Rule Rule | $9.99 | 17-Apr-2008 | 0 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $9.99 | 09-Apr-2008 | 0 |
| Vintage Keuffel & Esser Co. NY Slide Rule Rule | $9.99 | 13-Apr-2008 | 0 |
| 1947 K&E Keuffel & Esser Slide Rule w/Case 418 | $9.99 | 08-Apr-2008 | 0 |
| K&E Keuffel & Esser Slide Rule w/Case 4053-3 | $9.99 | 08-Apr-2008 | 0 |
| K & E THE MANNHEIM SLIDE RULE MANUAL/BOOK 1938 | $9.99 | 22-Apr-2008 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE WITH ORIGIN | $9.95 | 14-Apr-2008 | 0 |
| VINTAGE SLIDE RULE BY KEUFFEL & ESSER CO. N.Y. | $9.95 | 21-Apr-2008 | 0 |
| K & E Merchants Slide Rule # 4095-3 | $9.95 | 21-Apr-2008 | 0 |
| Vintage KEUFFEL & ESSER N4081-3 Slide Rule & C | $9.95 | 23-Apr-2008 | 0 |
| 1900 KEUFFEL & ESSER SLIDE RULE 4053-3 W/CASE | $9.95 | 26-Apr-2008 | 0 |
| K & E DUPLEX SLIDE RULE - NO. 4083 WITH CASE A | $9.95 | 14-Apr-2008 | 0 |
| KEUFFEL AND ESSER Co. SLIDE RULER / VENUS 10 P | $9.80 | 29-Apr-2008 | 0 |
| KEUFFEL AND ESSER Co. SLIDE RULER / VENUS 10 P | $9.80 | 17-Apr-2008 | 0 |
| KEUFFEL AND ESSER Co. SLIDE RULER / VENUS 10 P | $9.80 | 19-Apr-2008 | 0 |
| KEUFFEL AND ESSER Co. SLIDE RULER / VENUS 10 P | $9.80 | 13-Apr-2008 | 0 |
| K&E Slide Rules Manual - Jet-Log and Decitrig | $9.75 | 27-Apr-2008 | 0 |
| Vintage Keuffel Esser Slide Rule 4088-3 & Leat | $9.00 | 06-Apr-2008 | 0 |
| K & E Sliderule date 1900 | $7.99 | 08-Apr-2008 | 0 |
| 1939 K & E Keuffel Esser Slide Rule 4070 Book | $7.99 | 07-Apr-2008 | 0 |
| Keuffel & Esser Slide Rule 4081-3 w/Hard Case | $7.99 | 20-Apr-2008 | 0 |
| "Keuffel & Esser Co., NY,Beginner's Slide Rule | $7.99 | 27-Apr-2008 | 0 |
| Slide Rule Keuffel & Esser Co NY Beginner's Wo | $7.99 | 08-Apr-2008 | 0 |
| Early K&E Slide Rule N4058W glass cursor (c) 1 | $7.95 | 14-Apr-2008 | 0 |
| Keuffel & Esser Co. Slide Rule w/ Case & Instr | $7.00 | 21-Apr-2008 | 0 |
| Vintage Keuffel & Esser Beginners Slide Rule & | $6.99 | 10-Apr-2008 | 0 |
| K & E Slide Rule Manual for # 4081 Log Log Du | $6.99 | 05-Apr-2008 | 0 |
| VINTAGE SLIDE RULER SET KEUFFEL & ESSER CO. NY | $6.00 | 01-Apr-2008 | 0 |
| SLIDE RULE MANUAL & TRIANGLE RULER K & E F1380 | $6.00 | 29-Apr-2008 | 0 |
| Mint All Wood Keuffel & Esser Slide Rule-Box-I | $6.00 | 04-Apr-2008 | 0 |
| 1947 K & E Keuffer Esser Slide Rule Manual No. | $6.00 | 11-Apr-2008 | 0 |
| Vintage Keuffel and Esser Co. NY #4048 Beg. Sl | $6.00 | 01-Apr-2008 | 0 |
| Log Log Duplex SLIDE RULE MANUAL Keuffel & Ess | $5.99 | 15-Apr-2008 | 0 |
| Vintage Keuffel & Esser Slide Rule 10.5 Inch 5 | $5.75 | 27-Apr-2008 | 0 |
| 1939 K & E Keuffel Esser Slide Rule 4070 Book | $4.99 | 21-Apr-2008 | 0 |
| 1944 KEUFFEL & ESSER SLIDE RULE MANUAL #N4053 | $4.99 | 29-Apr-2008 | 0 |
| 1900 Keuffel & Esser Co. Slide Rule with case | $4.99 | 20-Apr-2008 | 0 |
| Vintage Keuffel & Essner Slide Rule in Case | $4.99 | 06-Apr-2008 | 0 |
| The Polyphase Slide Rule manual by Kueffel & E | $4.99 | 27-Apr-2008 | 0 |
| SLIDE RULE MANUAL & TRIANGLE RULER K & E F1380 | $4.99 | 29-Apr-2008 | 0 |
| Slide Rule K+E model 68 1892 | $4.00 | 13-Apr-2008 | 0 |
| Slide Rule K&E model 4058W | $4.00 | 12-Apr-2008 | 0 |
| Log Log Duplex Slide Rule Manual book 1932 K&E | $3.99 | 29-Apr-2008 | 0 |
| Original K&E Polyphase Duplex Pocket Slide Rul | $3.99 | 12-Apr-2008 | 0 |
| Beginner's Slide Ruler KEUEFFEL & ESSER CO. U. | $3.99 | 26-Apr-2008 | 0 |
| Keuffel & esser Slide Rule.Pat. 1900. SEE | $3.45 | 06-Apr-2008 | 0 |
| 1924 Keuffel & Esser polyphase duplex slide ru | $3.00 | 04-Apr-2008 | 0 |
| Vintage KEUFFEL & ESSER Slide Rule Model 4080- | $0.99 | 20-Apr-2008 | 0 |
| Vintage KEUFFEL & ESSER Slide Rule Model 4055 | $0.99 | 23-Apr-2008 | 0 |
| Vintage KEUFFEL & ESSER Slide Rule Model 4055 | $0.99 | 05-Apr-2008 | 0 |
| Vintage KEUFFEL & ESSER Slide Rule Model 4080- | $0.99 | 05-Apr-2008 | 0 |
| Keuffel & Esser Slide Rule N4053-3 w/Orig Leat | $0.99 | 20-Apr-2008 | 0 |
| K+E Slide Rule Manual Log Log Duplex Trig No. | $0.99 | 04-Apr-2008 | 0 |
| Polyphase Duplex/Slide Rule Booklet/1924/K&E/A | $0.99 | 02-Apr-2008 | 0 |
| Keuffel& Esser Model 4058W Slide Rule | $0.99 | 07-Apr-2008 | 0 |
| K+E 4081-3 Slide Rule w/ original box and docu | $0.99 | 15-Apr-2008 | 0 |