| Keuffel and Esser |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Aug-2007 |
| RARE Keuffel & Esser Analon Scientific Slide R | $1325.00 | 10-Aug-2007 | 19 |
| Keuffel & Esser Analon 68 1400 Slide Rule - w/ | $735.65 | 01-Aug-2007 | 15 |
| Keuffel & Esser Analon 68 1400 Slide Rule | $690.00 | 01-Aug-2007 | 15 |
| EARLY KEUFFEL & ESSER SLIDE RULE MOD # 4071T- | $280.25 | 16-Aug-2007 | 8 |
| Keuffel Esser Chemical Compund Slide Rule 4160 | $228.05 | 07-Aug-2007 | 8 |
| "K&E Deci-Lon 5 Slide Rule 68-1130,Tan Lthr Ca | $217.50 | 29-Aug-2007 | 1 |
| Slide Rule; Keuffel & Esser Co.; MINT COND. | $201.23 | 15-Aug-2007 | 9 |
| Keuffel & Esser Co. Mannheim Slide Rule Pat. 1 | $199.99 | 13-Aug-2007 | 1 |
| "RARE 22"" Keuffel & Esser Slide Rule #4088 .. | $187.51 | 05-Aug-2007 | 10 |
| K&E Deci-Lon 68-1100 slide rule with manual an | $162.50 | 20-Aug-2007 | 11 |
| K+E Deci-Lon 5 Model 68-1130 slide rule w/case | $161.98 | 17-Aug-2007 | 4 |
| K&E DECI-LON SLIDE RULE 68 1130 + CASE Keuffel | $155.50 | 03-Aug-2007 | 7 |
| "K+E Decilon 10 68-1100 slide rule w/case, man | $153.50 | 17-Aug-2007 | 4 |
| "VINTAGE KEUFFEL & ESSER K&E 4081-5 SLIDE RULE | $153.50 | 16-Aug-2007 | 12 |
| K & E Deci-lon Slide Rule | $152.50 | 30-Aug-2007 | 12 |
| Big Slide Rule Slidedisk Emil Tröger Circular | $129.00 | 04-Aug-2007 | 1 |
| Big Slide Rule Slidedisk Emil Tröger Circular | $129.00 | 31-Aug-2007 | 1 |
| Big Slide Rule Slidedisk Emil Tröger Circular | $129.00 | 19-Aug-2007 | 1 |
| Keuffel & Esser vintage slide rule 1955 never | $127.50 | 25-Aug-2007 | 11 |
| Vintage Keuffel & Esser 68 1100 Deci-Lon 10 Sl | $123.50 | 22-Aug-2007 | 14 |
| Slide Rule Slidedisk Emil Tröger Circular Slid | $119.00 | 19-Aug-2007 | 1 |
| Vintage K & E Keuffel & Esser 4181-1 Slide Rul | $104.52 | 22-Aug-2007 | 8 |
| "KEUFFEL & ESSER NO.4081-3 SLIDE RULE W/ CASE, | $102.50 | 01-Aug-2007 | 8 |
| "K+E Decilon 10 68-1100 slide rule w/case, man | $99.99 | 10-Aug-2007 | 1 |
| K & E Deci-Lon 68-1100 Slide Rule with Manual | $90.90 | 23-Aug-2007 | 25 |
| Vintage K & E Stadia Slide Rule with box and c | $90.00 | 21-Aug-2007 | 8 |
| Vintage K & E Deci-Lon 68-1100 Slide Rule | $90.00 | 28-Aug-2007 | 2 |
| Vintage Keufflel & Esser Slide Rule | $88.00 | 23-Aug-2007 | 6 |
| K&E Deci-Lon SLIDE RULE 68-1100 + CASE Keuffel | $82.00 | 27-Aug-2007 | 17 |
| VINTAGE K & E DECI-LON 10 SLIDE RULE IN LEATHE | $81.50 | 26-Aug-2007 | 10 |
| K & E Keuffel & Esser 68 1100 Deci-Lon 10 Slid | $81.00 | 19-Aug-2007 | 6 |
| FINE K&E No. 4095 Merchants Slide Rule Manual | $77.00 | 23-Aug-2007 | 6 |
| K&E Keuffel & Esser 3 Vintage Slide Rules Manu | $76.57 | 10-Aug-2007 | 8 |
| "K&E 10 DEC-ILON SLIDE RULE, CASE, BEAUTIFUL,M | $72.72 | 10-Aug-2007 | 16 |
| "K&E 10"" Slide Rule 4081-3S (68-1215) w/Lthr | $69.95 | 12-Aug-2007 | 1 |
| K&E Deci-lon Slide Rule 68 1100 EXCELLENT w/ c | $69.75 | 14-Aug-2007 | 5 |
| Vintage Keuffel & Esser K & E Slide Rule #4181 | $66.00 | 04-Aug-2007 | 6 |
| "VINTAGE KEUFFEL & ESSER K&E 4133 SLIDE RULE 8 | $57.00 | 21-Aug-2007 | 4 |
| Vintage Slide Rule K&E 1961 | $55.25 | 22-Aug-2007 | 2 |
| KEUFFEL & ESSER 68 1100 DECI-lON SLIDE RULE-wi | $55.00 | 01-Aug-2007 | 1 |
| Vintage Keuffel & Esser 68 1100 Deci-Lon 10 Sl | $52.50 | 01-Aug-2007 | 10 |
| Keuffel & Esser Military (Field Artillary) Sli | $52.00 | 08-Aug-2007 | 4 |
| K & E Slide Rule Log Log Duplex Decitrig 4081- | $51.00 | 14-Aug-2007 | 10 |
| Rare Keuffel & Esser Slide Rule Log 68 1210 bo | $51.00 | 14-Aug-2007 | 3 |
| Keuffel & Esser Log Log duplex trig slide rule | $50.99 | 04-Aug-2007 | 8 |
| K & E 68-1210 Duplex DeciTrig Slide Rule & Cas | $50.00 | 29-Aug-2007 | 8 |
| K&E KUEFFEL ESSER SLIDE RULE BOX MAGNIFIER CAS | $50.00 | 12-Aug-2007 | 9 |
| "Vintage Keuffel & Esser 20"" Slide Rule 4051 | $49.88 | 16-Aug-2007 | 9 |
| Slide Rule-K&E Decilon-10 Inch with Correct Ca | $49.00 | 22-Aug-2007 | 1 |
| SLIDE RULE K&E Log Log Duplex Decitrig No68 12 | $49.00 | 24-Aug-2007 | 7 |
| K+E 1930s slide rule with hard case and magnif | $46.00 | 22-Aug-2007 | 10 |
| "K&E 12"" Slide Rule Model N4080-3" | $45.00 | 22-Aug-2007 | 1 |
| 1958 K&E KEUFFEL & ESSER SLIDE RULE 4071-3 USA | $44.00 | 13-Aug-2007 | 6 |
| K&E KEUFFEL - ESSER 68-1251 SLIDE RULE w LEATH | $43.00 | 20-Aug-2007 | 1 |
| Keuffel & Esser (K & E) Slide Rule Pat. Pend. | $42.00 | 15-Aug-2007 | 8 |
| Keuffel & Esser Co. N.Y. 20-inch Slide Rule wi | $42.00 | 10-Aug-2007 | 10 |
| K&E Keuffel-Esser # 68-1251 Slide Rule with Ca | $41.00 | 12-Aug-2007 | 3 |
| K&E Keuffel & Esser 68 1100 Deci-Lon 10 Slide | $40.75 | 08-Aug-2007 | 8 |
| Vintage Keuffel & Esser K&E SLIDE RULE INDICAT | $40.01 | 22-Aug-2007 | 6 |
| KEUFFEL & ESSER POLYPHASE DUPLEX SLIDE RULE 40 | $39.99 | 06-Aug-2007 | 1 |
| Keuffel Esser Slide Rule N-4096 Vintage Old NR | $38.95 | 08-Aug-2007 | 4 |
| K+E slide rule magnifier w/ chamois storage ba | $38.00 | 17-Aug-2007 | 8 |
| Keuffel & Esser Co. Log Duplex Slide Rule & Ma | $37.58 | 26-Aug-2007 | 8 |
| Instruction manual for K+E Deci-Lon model slid | $37.50 | 31-Aug-2007 | 1 |
| K & E LOG LOG DUPLEX 4080-35 Trig Slide Rule/C | $37.02 | 22-Aug-2007 | 8 |
| "K & E 7"" slide rule copyright 1947 leather c | $37.00 | 07-Aug-2007 | 9 |
| K & E DRAFTING SLIDE RULES CATALOG 1949 KEUFFE | $36.00 | 13-Aug-2007 | 5 |
| VINTAGE KEUFFEL ESSER K&E Slide Rule 4080-3 w | $36.00 | 13-Aug-2007 | 6 |
| 1955 K & E College School Catalog Slide Rules | $36.00 | 12-Aug-2007 | 1 |
| Vintage Keuffel & Esser K&E Pocket Slide Rule | $35.00 | 23-Aug-2007 | 1 |
| K&E 7 inch slide rule in case 1947 model | $34.90 | 25-Aug-2007 | 8 |
| "Log-Log K+E 6"" Slide Rule with Case" | $34.33 | 09-Aug-2007 | 3 |
| Vintage K&E Slide Rule w Carrying Case & Manua | $34.00 | 13-Aug-2007 | 3 |
| K & E Slide Rule Log Log Duplex Decitrig 4081- | $33.01 | 18-Aug-2007 | 9 |
| VINTAGE K&E SLIDE RULE 4081-3S SLIDERULE & LEA | $32.50 | 26-Aug-2007 | 9 |
| 1947 Keuffel & Esser Co. Slide Rule w/Leather | $31.00 | 25-Aug-2007 | 6 |
| K & E Slide Rule Log Log Duplex Vector #N4083- | $31.00 | 01-Aug-2007 | 6 |
| Keuffel & Esser Polyphase Duplex Slide Rule 40 | $30.99 | 13-Aug-2007 | 6 |
| Vintage Slide Rule w/Leather Case Keuffel & Es | $30.99 | 07-Aug-2007 | 1 |
| VINTAGE KEUFFEL&ESSER SLIDE RULE #4070-3 | $30.00 | 13-Aug-2007 | 1 |
| GREAT K & E SLIDE RULE * KEUFFEL & ESSER SLIDE | $29.99 | 29-Aug-2007 | 1 |
| K&E Slide Rule with Leather Case | $29.99 | 06-Aug-2007 | 1 |
| K&E Slide Rule 4081-3 and Original Manual 1947 | $29.95 | 02-Aug-2007 | 1 |
| Vintage 1947 Keuffel & Esser K&E Slide Rule #4 | $28.50 | 13-Aug-2007 | 8 |
| PRE 1930 K & E POLYPHASE DUPLEX SLIDE RULE 408 | $28.50 | 07-Aug-2007 | 4 |
| DORIC K & E CO. Small Slide Rule | $28.00 | 13-Aug-2007 | 1 |
| Vintage SLIDE RULE Kauffel & Esser with case | $26.50 | 25-Aug-2007 | 3 |
| Keuffel & Esser (K & E) Slide Rule 4070-3 W/Ca | $26.01 | 26-Aug-2007 | 6 |
| Vintage K & E CO. 4181-3 SLIDE RULE w/Extras | $26.00 | 27-Aug-2007 | 5 |
| K&E 4161-1 slide rule in case | $25.95 | 26-Aug-2007 | 10 |
| 1947 Keuffel & Esser slide rule #4181-1 K&E | $25.25 | 08-Aug-2007 | 11 |
| Vintage KEUFFEL & ESSER Log Duplex Decitrig Sl | $25.07 | 24-Aug-2007 | 3 |
| vintage 1947 Keuffel & Esser 4181-1 slide rule | $25.00 | 12-Aug-2007 | 9 |
| Vintage Keuffel & Esser Co. Slide Rule w/Leath | $25.00 | 31-Aug-2007 | 1 |
| Post Versalog Japan & K E 4081-3 Slide Rule | $24.99 | 30-Aug-2007 | 1 |
| Vintage 1908 Keuffel & Esser Co NY Slide Rule | $24.99 | 22-Aug-2007 | 1 |
| Slide Rule Magnifier-K&E No 4185C in Labeled B | $24.50 | 22-Aug-2007 | 5 |
| LOT old vintage SLIDE RULE BOOK S K&E & others | $24.45 | 06-Aug-2007 | 4 |
| K & E Keuffel & Esser 4053 Slide Rule Near Min | $24.16 | 22-Aug-2007 | 5 |
| LOT OF 4 VINTAGE SLIDE RULES +ADDOMETER K&E+DI | $24.00 | 13-Aug-2007 | 6 |
| Vintage K & E KEUFFEL & ESSER CO. Slide Rule D | $23.75 | 08-Aug-2007 | 5 |
| 2 Keuffel & Esser Slide Slide Rules 4053-3 & 4 | $23.40 | 13-Aug-2007 | 4 |
| KEUFFEL & ESSER CO LOG LOG DUPLEX SLIDE RULE N | $23.03 | 05-Aug-2007 | 6 |
| 1961 Keuffel & Esser K12 Slide Rule w/Bag & In | $22.78 | 12-Aug-2007 | 5 |
| "Vintage 1947 Keuffel & Esser Co. Slide Rule, | $22.50 | 29-Aug-2007 | 4 |
| "Keuffel & Esser Slide Rule #4081-3 with manua | $22.50 | 02-Aug-2007 | 5 |
| Early 1900s K&E Keuffel & Esser Slide Rule Mod | $22.22 | 26-Aug-2007 | 2 |
| K&E 4081-3 Sliderule Slide Rule w/case Keuffel | $21.75 | 30-Aug-2007 | 10 |
| K & E MODEL DUPLEX DECITRIG SLIDE RULE | $21.50 | 02-Aug-2007 | 3 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE INDICATOR G | $21.05 | 19-Aug-2007 | 5 |
| Keuffel & Esser (K&E) Polyphase 4053-5 slide r | $21.00 | 12-Aug-2007 | 8 |
| KEUFFEL & ESSER SLIDE RULE N4081-3 W/ LEATHER | $21.00 | 12-Aug-2007 | 5 |
| 2 Vintage Slide Rules! 12in K&E and 6 in picke | $20.50 | 02-Aug-2007 | 10 |
| 4 Vintage Slide Rules w/ Cases Keuffel & Esser | $20.50 | 07-Aug-2007 | 5 |
| 4 SLIDE RULES VINTAGE DIETZGEN DORIC K E ACUMA | $20.50 | 29-Aug-2007 | 4 |
| KEUFFEL & ESSER SLIDE RULE LOG LOG DUPLEX 4083 | $20.50 | 28-Aug-2007 | 3 |
| Keuffel & Esser 4181-1 Slide Ruler w/Leather C | $20.50 | 26-Aug-2007 | 3 |
| "10 Slide Rules - Lutz, Bruning, Keuffel & Ess | $20.50 | 21-Aug-2007 | 5 |
| 1947 K&E SLIDE RULE N4081-3 W/LEATHER CASE & B | $20.49 | 23-Aug-2007 | 2 |
| K&E Log Log Duplex Decitrig 4081-3 slide rule | $20.00 | 20-Aug-2007 | 1 |
| My old buddy: K&E 4181-1 slide rule with case | $20.00 | 16-Aug-2007 | 1 |
| Vintage K & E Slide Rule Magnifying Cursor 408 | $19.99 | 05-Aug-2007 | 1 |
| Vintage Keuffel & Esser N4058W Beginners Slide | $19.99 | 22-Aug-2007 | 1 |
| "K&E SLIDE RULE, 1947, 4181-3, WITH ORIGINAL L | $19.75 | 24-Aug-2007 | 6 |
| "K & E Doric Slide Rule In Leather Case, 1947" | $19.28 | 14-Aug-2007 | 1 |
| "K & E Slide Rule In Leather Case, 1939" | $19.28 | 14-Aug-2007 | 2 |
| VINTAGE K&E SLIDE RULE ENGINEERING MATH SCIENC | $19.00 | 04-Aug-2007 | 9 |
| KEUFFEL & ESSER CO. NEW YORK MANNHEIM TYPE SLI | $19.00 | 11-Aug-2007 | 9 |
| OLD KEUFFEL ESSER POLYPHASE DUPLEX SLIDE RULE | $18.50 | 26-Aug-2007 | 4 |
| KEUFFEL & ESSER CO. SLIDE RULES BOOK DECI-LON | $18.39 | 31-Aug-2007 | 4 |
| Slide Rule-K&E-Log Log Duplex Decitrig-No.68 1 | $18.26 | 23-Aug-2007 | 3 |
| ">> OLD > ""K & E MANNHEIM #4041 >> SLIDE RULE | $18.00 | 29-Aug-2007 | 1 |
| Vintage Doric K & E CO. 4168 SLIDE RULE w/Extr | $17.50 | 27-Aug-2007 | 4 |
| KEUFFEL & ESSER CO. NY Slide Rule with case 19 | $17.45 | 21-Aug-2007 | 6 |
| vintage Keuffel & Esser Co. N.Y. slide rule en | $17.00 | 08-Aug-2007 | 3 |
| "Vintage Keuffel & Esser Slide Ruler, Mint # N | $16.91 | 22-Aug-2007 | 3 |
| Keuffel & Esser Slide rule # 4181-3 dated 1947 | $16.50 | 01-Aug-2007 | 4 |
| K&E DORIC 1531 SLIDE RULE + CASE Keuffel Esser | $16.17 | 03-Aug-2007 | 5 |
| VINTAGE 1943 WW2 K&E Slide Rule Howitzer M54 M | $16.02 | 27-Aug-2007 | 2 |
| K&E Keuffel & Esser Slide Rule 4055 Favorite l | $16.00 | 12-Aug-2007 | 3 |
| K&E Polyphase Duplex SLIDE RULE 4088-3 cellulo | $16.00 | 30-Aug-2007 | 1 |
| K & E Keuffel & Esser Slide Rule #N4081-3 Leat | $15.50 | 22-Aug-2007 | 2 |
| K+E Model #4081-3 slide rule w/case + extras | $15.50 | 17-Aug-2007 | 4 |
| Keuffel & Esser No. 4080 slide rule with manua | $15.49 | 24-Aug-2007 | 3 |
| KEUFFEL & ESSER [K & E] SLIDE RULE W/CASE MIB | $15.40 | 22-Aug-2007 | 3 |
| VINTAGE K&E SLIDE RULE ENGINEERING MATH SCIENC | $15.00 | 03-Aug-2007 | 6 |
| "Vintage KEUFFEL & ESSER/K & E/4168 Slide Rule | $15.00 | 22-Aug-2007 | 5 |
| KEUFFEL & ESSER SLIDE RULE N4081-3 WITH LEATHE | $14.99 | 06-Aug-2007 | 1 |
| LOT OF 5 SLIDE RULES KEUFFEL & ESSER GLOBEMAST | $14.99 | 06-Aug-2007 | 1 |
| KEUFFEL & ESSER SLIDE RULE WITH CASE | $14.98 | 02-Aug-2007 | 1 |
| 4 Slide Rule Manuals K E Log Log Duplex 4080 4 | $14.50 | 22-Aug-2007 | 4 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE RULER LEATH | $14.50 | 25-Aug-2007 | 3 |
| Pat June 5 1900 Keuffel Esser Slide Rule | $14.50 | 07-Aug-2007 | 4 |
| Vintage Keuffel & Esser Slide Rule 4181-3 | $14.50 | 04-Aug-2007 | 5 |
| Slide Rules-2-K&E 4088-3/Aristo Darmstadt 867U | $14.50 | 23-Aug-2007 | 4 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE INDICATOR G | $14.00 | 19-Aug-2007 | 6 |
| Vintage Keuffel & Esser Slide Rule In Case Wit | $14.00 | 26-Aug-2007 | 2 |
| Vintage K&E Log Log Duplex slide rule case Nic | $13.95 | 27-Aug-2007 | 1 |
| K E Slide Rules An Instruction Manual 1962 hb | $13.77 | 05-Aug-2007 | 3 |
| KEUFFEL ESSER K&E Log Duplex Slide Rule 4080-3 | $13.61 | 28-Aug-2007 | 2 |
| VINTAGE KEUFFEL & ESSER CO SLIDE RULE W/ CASE | $13.61 | 22-Aug-2007 | 2 |
| Keuffel & Esser K&E vintage slide rule | $13.50 | 29-Aug-2007 | 2 |
| 1924 KEUFFEL & ESSER MANNHEIM SLIDE RULE BOOKL | $13.50 | 22-Aug-2007 | 3 |
| Lot of 5 Vintage Slide Rules Box & Case - K&E | $13.26 | 01-Aug-2007 | 2 |
| OLD IVORY SLIDE RULE & LEATHER CASE KEUFFEL & | $12.99 | 02-Aug-2007 | 1 |
| VINTAGE KEUFFEL ESSER K&E Slide Rule 4080-3 w | $12.57 | 31-Aug-2007 | 3 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE WITH LEATHE | $12.50 | 12-Aug-2007 | 3 |
| Vintage Doric K & E CO. 9068 SLIDE RULE w/Case | $12.49 | 24-Aug-2007 | 3 |
| Vintage 1930s KEUFFEL & ESSER 4092-3 Slide Rul | $12.00 | 28-Aug-2007 | 2 |
| K and E Very Rare Slide Rule Wood -Cover $1NR | $12.00 | 08-Aug-2007 | 14 |
| Vintage Keuffel & Esser Slide Rule #4054 & Lea | $11.99 | 29-Aug-2007 | 1 |
| "KUEFFEL & ESSER SLIDE RULE, 1947, 4083-3, LEA | $11.99 | 28-Aug-2007 | 1 |
| "(2) vintage Keuffel & Esser slide rules, 4080 | $11.57 | 04-Aug-2007 | 4 |
| K & E BEGINNER'S SLIDE RULE 4058 C- USED IN TH | $11.53 | 17-Aug-2007 | 5 |
| KEUFFEL & ESSER K&E SLIDE RULE NR | $11.50 | 19-Aug-2007 | 2 |
| KEUFFEL & ESSER SLIDE RULE IN LEATHER CASE W/B | $11.50 | 09-Aug-2007 | 3 |
| old early 1900s engineering slide rule keuffel | $11.01 | 03-Aug-2007 | 2 |
| "Rare Vintage K&E slide rule, box, books, case | $10.58 | 13-Aug-2007 | 2 |
| vintage K&E polyphase slide rule #4053-3 L@@K | $10.50 | 27-Aug-2007 | 2 |
| K&E 4081 3S Log Log Decitrig Duplex Slide Rule | $10.50 | 23-Aug-2007 | 4 |
| SLIDE RULE MANUALS (How To Use) - K&E and Pick | $10.50 | 02-Aug-2007 | 2 |
| K & E SLIDE RULE AND CASE 4161-1 | $10.27 | 26-Aug-2007 | 2 |
| K & E 12 inch engineering slide rule with case | $10.00 | 27-Aug-2007 | 1 |
| "2 Vintage Slide Rules Keuffel & Esser ,Fredri | $9.99 | 20-Aug-2007 | 1 |
| Vintage K & E Slide Rule #4053 - 3 ( Year 1934 | $9.99 | 10-Aug-2007 | 1 |
| VINTAGE K&E KEUFFEL & ESSSER RULER SLIDE RULE | $9.99 | 02-Aug-2007 | 1 |
| Slide Rule-3-Vintage-K&E-Cases-4088-2/4058W/74 | $9.99 | 23-Aug-2007 | 1 |
| "Keuffel & Esser Co. N.Y. Pat 1900 Slide Rule, | $9.99 | 12-Aug-2007 | 1 |
| KEUFFEL & ESSER CO. NY SLIDE RULE AND CASE | $9.99 | 21-Aug-2007 | 1 |
| K&E Log Log Duplex Decitrig No. 4081 Slide Rul | $9.99 | 06-Aug-2007 | 1 |
| Vintage 1947 K E Keuffel Esser 4181-3 Slide Ru | $9.99 | 19-Aug-2007 | 1 |
| "Keuffel and Esser 12"" slide rule" | $9.99 | 17-Aug-2007 | 1 |
| K&E Slide Rule Log Log Duplex Trig N4080 and C | $9.99 | 26-Aug-2007 | 1 |
| K & E Slide Rule Manual No. 68 2061 MODERN POL | $9.99 | 22-Aug-2007 | 1 |
| 1900 K&E Polyphase Slide Rule 4053-3 w/origina | $9.99 | 04-Aug-2007 | 1 |
| "Vintage Keuffel & esser Co., slide rule- 5170 | $9.99 | 03-Aug-2007 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE #516 | $9.99 | 09-Aug-2007 | 1 |
| Vintage Keuffel & Esser 1932 Slide Rule 4098 C | $9.99 | 20-Aug-2007 | 1 |
| "EX+ KEUFFEL ESSER #4097D 6"" SLIDE RULE + LEA | $9.99 | 22-Aug-2007 | 1 |
| K&E 1947 Slide Rule Manual N4081 Decitrig & Su | $9.99 | 16-Aug-2007 | 1 |
| 1A: Vintage Keuffel & Esser Slide Rule & Leath | $9.99 | 12-Aug-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule Manual No 4 | $9.99 | 14-Aug-2007 | 1 |
| K&E LLO SLIDE RULE 4080-3 + CASE Keuffel Esser | $9.99 | 03-Aug-2007 | 1 |
| VINTAGE KEUFFEL & ESSER POLYPHASE SLIDE RULE | $9.99 | 16-Aug-2007 | 1 |
| PAT JUNE1900 KEUFFEL & ESSER CO SLIDE RULE FRO | $9.99 | 02-Aug-2007 | 1 |
| 1915 Keuffel & Esser 4088-3 Slide rule With Le | $9.99 | 31-Aug-2007 | 1 |
| KEUFFEL & ESSER CO. N.Y SLIDE RULE PAT. 1900 | $9.99 | 18-Aug-2007 | 1 |
| 1947 K & E KEUFFEL & ESSER CO. Slide Rule DORI | $9.99 | 08-Aug-2007 | 1 |
| K & E Slide Rule Manual LOG LOG DUPLEX DECITRI | $9.99 | 10-Aug-2007 | 1 |
| K&E Deci-Lon 68-1100 slide rule with manual an | $9.99 | 13-Aug-2007 | 8 |
| KEUFFEL K & E 10' SLIDE RULER WITH CASE | $9.99 | 25-Aug-2007 | 1 |
| Keuffel Esser Slide Rule Log Log Duplex 4081-3 | $9.99 | 08-Aug-2007 | 1 |
| Vintage Keuffel & Esser 4070-3 Slide Rule | $9.95 | 02-Aug-2007 | 1 |
| vintage RARE Keuffel Esser SCIENTIFIC Slide Ru | $9.95 | 14-Aug-2007 | 1 |
| K & E LOG LOG DUPLEX DECITRIG Slide Rule Manua | $9.49 | 26-Aug-2007 | 1 |
| KEUFFEL ESSER K&E Wood SLIDE RULE 4058 W Vinta | $9.38 | 23-Aug-2007 | 2 |
| KUEFFEL ESSER SLIDE RULE 4092-3 CASE K+E | $9.00 | 10-Aug-2007 | 4 |
| KEUFFEL & ESSER SLIDE RULE WITH CASE | $8.99 | 04-Aug-2007 | 1 |
| K&E KEUFFEL & ESSER BEGINNERS SLIDE RULE N4058 | $8.88 | 23-Aug-2007 | 2 |
| Vintage Slide Rule Keuffle & Esser Co. | $8.00 | 05-Aug-2007 | 1 |
| VINTAGE SLIDE RULE KEUFFEL & ESSER CO. 1952 PO | $7.99 | 19-Aug-2007 | 2 |
| Keuffel & Esser K & E 4056 Slide Rule w case 1 | $7.99 | 02-Aug-2007 | 1 |
| Vintage Keuffel & Esser 4070-3 Slide Rule with | $7.99 | 21-Aug-2007 | 1 |
| K & E Polyphase Slide Rule No. N5053-3 In Case | $7.99 | 22-Aug-2007 | 2 |
| "1915 Keuffel & Esser 4095-3 Slide Rule, Merch | $7.99 | 05-Aug-2007 | 1 |
| Vintage Keuffel & Esser Slide Rule SN-116044 w | $7.99 | 19-Aug-2007 | 1 |
| K & E Slide Rule Manual LOG LOG DUPLEX DECITRI | $7.95 | 22-Aug-2007 | 1 |
| Keuffel Esser Polyphase Duplex Slide Rule Manu | $7.50 | 12-Aug-2007 | 1 |
| Historic K&E Beginner's Slide Rule | $7.50 | 21-Aug-2007 | 1 |
| Keuffel & Esser Slide Rule with Leather case | $7.50 | 25-Aug-2007 | 1 |
| "K & E Beginner's Slide Rule 4058W, w/ inst. & | $7.15 | 05-Aug-2007 | 1 |
| 2 VINTAGE KEUFFEL & ESSER SLIDE RULE INDICATOR | $7.00 | 19-Aug-2007 | 2 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE IN BOX - 40 | $6.99 | 30-Aug-2007 | 1 |
| K&E Mannheim Slide Rule Self-Rteaching Manual | $6.67 | 21-Aug-2007 | 1 |
| K+E #4053-3 POLYPHASE slide rule w/original ca | $6.50 | 03-Aug-2007 | 4 |
| DORIC K & E CO. Small Slide Rule | $6.50 | 19-Aug-2007 | 2 |
| K&E 4081-3 slide rule with case and K&E magnif | $6.50 | 21-Aug-2007 | 1 |
| K & E Slide Rule Polyphase Duplex DeciTrig 407 | $6.50 | 22-Aug-2007 | 5 |
| "KEUFFEL& ESSER, SLIDE RULE / CURSOR W LEATHER | $6.49 | 12-Aug-2007 | 1 |
| Keuffel & Esser - Slide Rule - Nice | $6.00 | 10-Aug-2007 | 1 |
| Keuffel & Esser Co. Slide Rule 225468 | $5.99 | 19-Aug-2007 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 4092-3 LOG | $5.99 | 03-Aug-2007 | 1 |
| Keuffel & Esser slide rule model 4059-3 made i | $5.99 | 11-Aug-2007 | 2 |
| The Quick and Easy SLIDE RULE Instruction Book | $5.75 | 22-Aug-2007 | 4 |
| K&E 4071 3S Polyphase Duplex Decitrig Slide Ru | $5.24 | 23-Aug-2007 | 3 |
| "Keuffel & Esser Deluxe Slide Rule w/ Leather | $5.00 | 13-Aug-2007 | 1 |
| VINTAGE KEUFFEL & ESSER BEGINNERS SLIDE RULE # | $5.00 | 28-Aug-2007 | 1 |
| OLD KEUFFEL & ESSER DECITRIG SLIDE RULE & MANU | $5.00 | 29-Aug-2007 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE - MADE IN U | $5.00 | 24-Aug-2007 | 2 |
| KEUFFEL & ESSER N4058W BEGINNER'S SLIDE RULE w | $5.00 | 08-Aug-2007 | 1 |
| Keuffel and Esser Slide Rule No 4071-3 | $4.99 | 17-Aug-2007 | 1 |
| keuffel & Esser slide rule 4150-1 Doric | $4.99 | 29-Aug-2007 | 1 |
| VINTAGE K&E KEUFFEL & ESSER WOODEN SLIDE RULE | $4.50 | 05-Aug-2007 | 2 |
| 2 OLD KEUFFEL & ESSER SLIDE RULE RULES WITH CA | $4.24 | 22-Aug-2007 | 3 |
| K & E Log Log Duplex Trig Slide Rule Manual N4 | $4.00 | 05-Aug-2007 | 1 |
| Keuffel & Esser Co. Slide Rule @1900 | $3.99 | 20-Aug-2007 | 1 |
| K&E 1947 KEUFFEL & ESSER CO. ENGRAVED SLIDE RU | $3.95 | 22-Aug-2007 | 1 |
| BEGINNER'S KEUFFEL & ESSER CO. N.Y SLIDE RULE | $3.75 | 18-Aug-2007 | 2 |
| Keuffel & Esser Slide Rule ** Model 4088-3 ** | $3.12 | 24-Aug-2007 | 3 |
| Vintage Slide Rule Instruction Book Eng. Instr | $3.10 | 27-Aug-2007 | 1 |
| Keuffel & Esser Slide Rule Model N4058W with C | $3.00 | 02-Aug-2007 | 1 |
| 1924 KEUFFEL ESSER K&E Polyphase Duplex Slide | $2.99 | 12-Aug-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $2.95 | 27-Aug-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $2.95 | 20-Aug-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $2.95 | 06-Aug-2007 | 1 |
| Old KEUFFEL & ESSER POLY PHASE Slide Rule MANU | $2.25 | 29-Aug-2007 | 2 |
| "Spare cursor, carton and inst for K+E 4097B S | $1.99 | 17-Aug-2007 | 1 |
| K&E Slide Rule in original sleeve | $1.99 | 24-Aug-2007 | 1 |
| Keuffel & Esser Co. Mannheim Slide Rule Pat. 1 | $1.99 | 18-Aug-2007 | 1 |
| "1940s K & E SLIDE RULE NO 4081-3 W LEATHER CA | $1.00 | 12-Aug-2007 | 2 |
| "Keuffel & Esser Co.1900-06 #4092 12"" Slide R | $0.99 | 20-Aug-2007 | 1 |
| K&E #4058W slide rule in case | $0.99 | 26-Aug-2007 | 1 |
| Keuffel & Esser Polyphase Slide Rule 4088-3 -P | $0.99 | 11-Aug-2007 | 1 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE W LEATHER C | $0.99 | 30-Aug-2007 | 1 |
| US PATENT for K&E SLIDERULE 1913 slide rule Ke | $0.95 | 13-Aug-2007 | 1 |
| Keuffel Esser Slide Rule | $40.00 | 11-Aug-2007 | 0 |
| K & E KEUFFEL & ESSER SLIDE RULE CLYPHASE DUPL | $39.99 | 26-Aug-2007 | 0 |
| K & E KEUFFEL & ESSER SLIDE RULE CLYPHASE DUPL | $39.99 | 12-Aug-2007 | 0 |
| "Keuffel & Esser Slide Rule # 4097C and 6"" Pa | $34.99 | 25-Aug-2007 | 0 |
| Keuffel Esser Slide Rule | $30.00 | 11-Aug-2007 | 0 |
| "Three K&E Slide Rules, 4056, 4041, 4058" | $25.00 | 19-Aug-2007 | 0 |
| Vintage Keuffel & Esser Co. Slide Rule w/Leath | $25.00 | 24-Aug-2007 | 0 |
| "K&E Slide Rule 4080-3 10"" Log Log Duplex Keu | $20.00 | 02-Aug-2007 | 0 |
| "KEUFFEL& ESSER, SLIDE RULE / CURSOR W LEATHER | $19.99 | 04-Aug-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule SN-116044 w | $19.99 | 11-Aug-2007 | 0 |
| Early 1947 K & E Slide Rule - Log Log Duplex D | $19.50 | 01-Aug-2007 | 0 |
| Keuffel & Esser Slide Rule Pig Leather Case Sm | $15.00 | 14-Aug-2007 | 0 |
| Pocket Slide Rule-K&E Doric No. 9068 w/Manual | $15.00 | 22-Aug-2007 | 0 |
| "K & E 68 1622 Polyphase Slide Rule w/Case,Box | $14.95 | 25-Aug-2007 | 0 |
| K&E SLIDE RULE MANUAL POLYPHASE #682063 1954 L | $12.99 | 28-Aug-2007 | 0 |
| "KEUFFEL& ESSER, SLIDE RULE / CURSOR W LEATHER | $12.99 | 04-Aug-2007 | 0 |
| KEUFFEL & ESSER SLIDE RULE <4081-3>-w/LEATHER- | $12.99 | 23-Aug-2007 | 0 |
| Keuffel & Esser 4081-3 Slide Rule 1937 w/ case | $10.00 | 11-Aug-2007 | 0 |
| Vintage Keuffel & Esser Mannheim Desk Slide Ru | $9.99 | 07-Aug-2007 | 0 |
| Vintage Keuffel & Essel Slide Rule model 4081- | $9.99 | 12-Aug-2007 | 0 |
| "KEUFFEL& ESSER, SLIDE RULE / CURSOR W LEATHER | $9.99 | 12-Aug-2007 | 0 |
| Keuffel & Esser Vintage Slide Rule/ Engineerin | $9.99 | 13-Aug-2007 | 0 |
| Keuffel & Esser slide rule model 4059-3 made i | $9.99 | 04-Aug-2007 | 0 |
| "Keuffel & Esser Co.1900-06 #4092 12"" Slide R | $9.99 | 08-Aug-2007 | 0 |
| Slide Rule K & E Co Polyphase 4053-3 Leather C | $9.99 | 08-Aug-2007 | 0 |
| K & E SLIDE RULE MANUAL LOG LOG DUPLEX TRIG No | $9.99 | 19-Aug-2007 | 0 |
| NICE KEUFFEL & ESSER CO. N.Y SLIDE RULE WITH C | $9.99 | 19-Aug-2007 | 0 |
| VINTAGE KEUFFEL & ESSER BEGINNERS SLIDE RULE # | $9.99 | 08-Aug-2007 | 0 |
| Vintage 1940s Keuffel & Esser Wood Slide Rule | $9.99 | 21-Aug-2007 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE & LEATHER C | $9.99 | 21-Aug-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule in Case $9. | $9.99 | 22-Aug-2007 | 0 |
| OLD KEUFFEL & ESSER DECITRIG SLIDE RULE & MANU | $9.99 | 22-Aug-2007 | 0 |
| K&E 4081-3 KEUFFEL & ESSER SLIDE RULE w/LEATHE | $9.99 | 23-Aug-2007 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE W LEATHER C | $9.99 | 23-Aug-2007 | 0 |
| K & E Keuffel Esser slide rule model 4092 Pat | $9.99 | 10-Aug-2007 | 0 |
| Keuffel & Esser 4092-3 Slide Rule with Leather | $9.99 | 03-Aug-2007 | 0 |
| Vintage Wood Beginner's Slide Rule Keuffel & E | $9.99 | 12-Aug-2007 | 0 |
| Vintage K+E Plastic Slide Rule with Case & Box | $9.99 | 25-Aug-2007 | 0 |
| K & E SLIDE RULE MANUAL LOG LOG DUPLEX TRIG No | $9.99 | 26-Aug-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule #N4053-3 W/ | $9.99 | 26-Aug-2007 | 0 |
| "Slide Rule, Keuffel & Esser Co. Tool, 1947" | $9.99 | 13-Aug-2007 | 0 |
| ANTIQUE SLIDE RULE KEUFFEL&ESSER N.Y. WOOD IVO | $9.99 | 26-Aug-2007 | 0 |
| K & E Keuffel Esser slide rule model 4092 Pat | $9.99 | 03-Aug-2007 | 0 |
| VINTAGE KEUFFEL & ESSER CO. N. Y. SLIDE RULE N | $9.99 | 27-Aug-2007 | 0 |
| Keuffel & Esser Slide Rule 4081 Log Log Duplex | $9.99 | 05-Aug-2007 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE W/ IVORY VE | $9.99 | 27-Aug-2007 | 0 |
| Keuffel & Esser Slide Rule & Acumath Slide Rul | $9.99 | 13-Aug-2007 | 0 |
| Keuffel & Esser Polyphase Duplex Trig Slide Ru | $9.99 | 28-Aug-2007 | 0 |
| Vintage Keuffel & Esser N4058W Beginners Slide | $9.99 | 29-Aug-2007 | 0 |
| Keuffel & Esser K&E Bamboo SLIDE RULE 4053-3 & | $9.99 | 31-Aug-2007 | 0 |
| VINTAGE KEUFFEL & ESSER CO. N.Y. SLIDE RULE MO | $9.95 | 26-Aug-2007 | 0 |
| Keuffel & Esser (K & E) Slide Rule 4090-3 w/Ca | $9.95 | 22-Aug-2007 | 0 |
| Keuffel Esser Slide Rule Pat1900 N4053-3 | $9.95 | 31-Aug-2007 | 0 |
| Keuffel & Esser (K & E) Slide Rule 4090-3 w/Ca | $9.95 | 29-Aug-2007 | 0 |
| Antique Kueffel & Esser Slide Rule in Leather | $9.90 | 15-Aug-2007 | 0 |
| Vintage K & E Slide Rule & Case 4071-3 Keuffel | $9.00 | 31-Aug-2007 | 0 |
| K & E Keuffel & Esser Slide Rule #N4081-3 Leat | $9.00 | 07-Aug-2007 | 0 |
| "K & E 4058W BEGINNER'S SLIDE RULE, KEEUFFEL & | $7.99 | 15-Aug-2007 | 0 |
| 1961 KEUFFEL & ESSER K12 Prep Slide Rule Case | $7.99 | 12-Aug-2007 | 0 |
| VINTAGE SLIDE RULE KEUFFEL & ESSER CO. 1952 PO | $7.99 | 16-Aug-2007 | 0 |
| Keuffel & Esser 4081-3 Slide Rule With Case & | $7.50 | 30-Aug-2007 | 0 |
| KEUFFEL & ESSER CO N.Y. SLIDE RULE | $7.00 | 08-Aug-2007 | 0 |
| KEUFFEL & ESSER CO. SLIDE RULE - GRANDPA'S! w/ | $7.00 | 22-Aug-2007 | 0 |
| vintage Keuffel & Esser 4053-3 slide rule + ca | $6.99 | 12-Aug-2007 | 0 |
| Antique Kueffel & Esser Slide Rule in Leather | $6.90 | 22-Aug-2007 | 0 |
| "Keuffel & Esser Deluxe Slide Rule w/ Leather | $6.00 | 04-Aug-2007 | 0 |
| Keuffel & Esser 4081-3 Slide Rule | $5.99 | 17-Aug-2007 | 0 |
| Vintage Keuffel & Essler Slide Rule with Leath | $5.40 | 12-Aug-2007 | 0 |
| KEUFFEL & ESSER SLIDE RULE WITH CASE | $5.00 | 20-Aug-2007 | 0 |
| No.4161 Keuffel & Esser Slide Rule Manual | $5.00 | 31-Aug-2007 | 0 |
| KEUFFEL & ESSER SLIDE RULE WITH CASE | $5.00 | 28-Aug-2007 | 0 |
| Vintage Keuffel & Esser CO NY Slide Rule w/ Ca | $4.99 | 17-Aug-2007 | 0 |
| Vintage Keuffel & Esser CO NY Slide Rule w/ Ca | $4.99 | 19-Aug-2007 | 0 |
| Vintage Keuffel & Esser CO NY Slide Rule w/ Ca | $4.99 | 26-Aug-2007 | 0 |
| 1924 Keuffel & Esser slide rule 4092-3 | $4.99 | 29-Aug-2007 | 0 |
| Early K & E Slide Rule and Case | $4.99 | 08-Aug-2007 | 0 |
| Keuffel & Esser K&E vintage slide rule | $4.99 | 29-Aug-2007 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE IN CASE | $4.99 | 03-Aug-2007 | 0 |
| VINTAGE KEUFFEL & ESSER SLIDE RULE 4092-3 MATC | $4.99 | 22-Aug-2007 | 0 |
| K-12 Prep Slide Rule by KEUFFEL & ESSER CO.: | $4.99 | 22-Aug-2007 | 0 |
| 1947 Keuffel and Esser K&E Slide Rule Manual N | $4.99 | 07-Aug-2007 | 0 |
| Keuffel & Esser Slide Rule Vintage 4054 SLT Ru | $4.99 | 07-Aug-2007 | 0 |
| Old KEUFFEL & ESSER POLY PHASE Slide Rule MANU | $4.95 | 15-Aug-2007 | 0 |
| K&E vintage Slide Rule Log Log Digitrig Manual | $4.95 | 27-Aug-2007 | 0 |
| Vintage Keuffel & Esser Slide Rule in Case | $4.95 | 04-Aug-2007 | 0 |
| "KEUFFEL & ESSER 9"" BEGINNER'S SLIDE RULE w/C | $4.50 | 22-Aug-2007 | 0 |
| 1939-1947 Keuffel & Esser 4081-3 slide rule ca | $3.99 | 12-Aug-2007 | 0 |
| "1940's KEUFFEL & ESSER Co SLIDE RULE, Needs S | $3.00 | 23-Aug-2007 | 0 |
| KEUFFEL & ESSER SLIDE RULE INSTRUCTION | $2.99 | 07-Aug-2007 | 0 |
| Slide Rule Manual by K & E No. 4080 copyright | $2.00 | 21-Aug-2007 | 0 |
| Keuffel & Esser Slide Rule | $0.99 | 12-Aug-2007 | 0 |