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K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule with Leather Case
K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule with Leather Case

$35.99

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Vintage K&E Slide Rule W/ Leather Orange Case Keuffel & Esser Ruler
Vintage K&E Slide Rule W/ Leather Orange Case Keuffel & Esser Ruler

$49.99

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K & E/Keuffel & Esser 10" #4161-3 Plastic Slide rule 018532 Black Leather
K & E/Keuffel & Esser 10" #4161-3 Plastic Slide rule 018532 Black Leather

$29.99

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Keuffel & Esser K&E Log Log Duplex 68 1215 Slide Rule W/Leather Case Old 4081-3S
Keuffel & Esser K&E Log Log Duplex 68 1215 Slide Rule W/Leather Case Old 4081-3S

$149.99

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VTG K&E N4058W Beginners Slide Rule Keuffel & Essex Co Black Case USA
VTG K&E N4058W Beginners Slide Rule Keuffel & Essex Co Black Case USA

$15.70

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K & E Keuffel & Esser Co. 4181-3 Slide Rule with Orange Leather Case
K & E Keuffel & Esser Co. 4181-3 Slide Rule with Orange Leather Case

$30.00

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Vintage Keuffel & Esser Co. K&E Slide Rule 4081-3 With Leather Case Made in USA
Vintage Keuffel & Esser Co. K&E Slide Rule 4081-3 With Leather Case Made in USA

$24.99

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VINTAGE WOOD K&E KEUFFEL & ESSER 20" N-4053-5  SLIDE RULE - Missing Curser
VINTAGE WOOD K&E KEUFFEL & ESSER 20" N-4053-5 SLIDE RULE - Missing Curser

$42.99

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Keuffel & Esser K+E Cooke Radio Slide Rule 4139 DAMAGED
Keuffel & Esser K+E Cooke Radio Slide Rule 4139 DAMAGED

$14.99

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K&E 68 1100 Slide Rule w/Leather Case Keuffel & Esser Deci Lon 10
K&E 68 1100 Slide Rule w/Leather Case Keuffel & Esser Deci Lon 10

$50.00

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B15 K&E Keuffel & Esser 4181 6" Pocket Slide Rule  with Slip case
B15 K&E Keuffel & Esser 4181 6" Pocket Slide Rule with Slip case

$40.00

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K&E No. 4081 Slide Rule Manual Log Log Duplex Decitrig Keuffel & Esser 1955
K&E No. 4081 Slide Rule Manual Log Log Duplex Decitrig Keuffel & Esser 1955

$11.98

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K&E Slide Rule US PATENT Art Print READY TO FRAME!!!! 1915 Keuffel & Esser K E
K&E Slide Rule US PATENT Art Print READY TO FRAME!!!! 1915 Keuffel & Esser K E

$9.95

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1943 The Log Log Duplex Trig Slide Rule No. 4080 A Manual Keuffel & Esser Co
1943 The Log Log Duplex Trig Slide Rule No. 4080 A Manual Keuffel & Esser Co

$10.00

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KEUFFEL & ESSER N4081-3 SLIDE RULE Log Duplex Decitrig w/ Leather Case
KEUFFEL & ESSER N4081-3 SLIDE RULE Log Duplex Decitrig w/ Leather Case

$44.92

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Keuffel & Esser Vintage Slide Ruler K&E Slide Rule Black Leather Case 4097D USA
Keuffel & Esser Vintage Slide Ruler K&E Slide Rule Black Leather Case 4097D USA

$17.95

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Vintage K&E Keuffel & Esser 4080-3  Slide Rule with Leather Case
Vintage K&E Keuffel & Esser 4080-3 Slide Rule with Leather Case

$24.99

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K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule with Leather Case
K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule with Leather Case

$34.95

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Vintage 1950s K&E Keuffel & Esser Co. Log Log Duplex Vector Slide Rule 4083-3
Vintage 1950s K&E Keuffel & Esser Co. Log Log Duplex Vector Slide Rule 4083-3

$29.95

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K&E Slide Rule Manual No. 4081 Log Log Duplex Decitrig Keuffel & Esser
K&E Slide Rule Manual No. 4081 Log Log Duplex Decitrig Keuffel & Esser

$8.99

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Vintage K&E Deci-Lon 10 Slide Rule 68-1100 with Case Keuffel & Esser Co
Vintage K&E Deci-Lon 10 Slide Rule 68-1100 with Case Keuffel & Esser Co

$50.00

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VTG Keuffel & Esser K&E 4133 Slide Rule w/ Beat-Up Case - Missing Glass
VTG Keuffel & Esser K&E 4133 Slide Rule w/ Beat-Up Case - Missing Glass

$48.99

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Vintage Keuffel & Esser K+E Slide Rule 4053-3 Polyphase Leather Case 8891 Rule
Vintage Keuffel & Esser K+E Slide Rule 4053-3 Polyphase Leather Case 8891 Rule

$19.99

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B15 K&E Keuffel & Esser 4181 6" Pocket Slide Rule with Slip case
B15 K&E Keuffel & Esser 4181 6" Pocket Slide Rule with Slip case

$35.00

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Vintage Keuffel & Esser Co. K&E Slide Rule 4088-3 With Leather Case Made in USA
Vintage Keuffel & Esser Co. K&E Slide Rule 4088-3 With Leather Case Made in USA

$27.95

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KEUFFEL & ESSER K&E 4053-3 SLIDE RULE with Green Leather Case With Booklet
KEUFFEL & ESSER K&E 4053-3 SLIDE RULE with Green Leather Case With Booklet

$24.99

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K&E KEUFFEL & ESSER N-4053-3 SLIDE RULE w/Case & Box, Polyphase. USA.
K&E KEUFFEL & ESSER N-4053-3 SLIDE RULE w/Case & Box, Polyphase. USA.

$19.49

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Keuffel & Esser 10 Deci Lon 68 1100 Slide Rule With Leather Case, K&E Made USA
Keuffel & Esser 10 Deci Lon 68 1100 Slide Rule With Leather Case, K&E Made USA

$52.00

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Vintage 1961 K&E 68 1100 Slide Rule + Leather Case Keuffel & Esser Deci Lon 10
Vintage 1961 K&E 68 1100 Slide Rule + Leather Case Keuffel & Esser Deci Lon 10

$60.00

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Keuffel Esser K&E Co Slide Rule Magnifier 4185C Vintage with box Made in NY
Keuffel Esser K&E Co Slide Rule Magnifier 4185C Vintage with box Made in NY

$49.99

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Keuffel & Esser K&E N4080-3 Log Log Duplex Trig Slide Rule W/ Brown Leather Case
Keuffel & Esser K&E N4080-3 Log Log Duplex Trig Slide Rule W/ Brown Leather Case

$44.99

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Keuffel & Esser Vintage Slide Ruler K&E Slide Rule Leather Case 4153-1
Keuffel & Esser Vintage Slide Ruler K&E Slide Rule Leather Case 4153-1

$28.49

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Vintage Doric K & E Co. 9068 Western Slide Rule
Vintage Doric K & E Co. 9068 Western Slide Rule

$15.00

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~1960s K&E Slide Rule 68 1210 w Orig case Copyright 1947 Log Log Duplex Decitrig
~1960s K&E Slide Rule 68 1210 w Orig case Copyright 1947 Log Log Duplex Decitrig

$28.50

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B15 K&E Keuffel & Esser 4098 6" Pocket Slide Rule  with Slip case
B15 K&E Keuffel & Esser 4098 6" Pocket Slide Rule with Slip case

$15.00

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Vintage K&E Keuffel & Esser Co Slide Rule . 4056 ; 1930's (RED WOOD) in case
Vintage K&E Keuffel & Esser Co Slide Rule . 4056 ; 1930's (RED WOOD) in case

$29.00

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Keuffel & Esser K+E 4053-3 Slide Rule in Leather Case, N4053-3
Keuffel & Esser K+E 4053-3 Slide Rule in Leather Case, N4053-3

$17.95

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1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA
1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA

$25.00

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Vintage Keuffel & Esser Co. K-12 Prep K + E Slide Rule #681892 W/ Case
Vintage Keuffel & Esser Co. K-12 Prep K + E Slide Rule #681892 W/ Case

$23.99

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K&E Log Log Duplex Decitrig Slide Rule with Leather Case K&E #4081-3
K&E Log Log Duplex Decitrig Slide Rule with Leather Case K&E #4081-3

$65.00

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Keuffel & Esser K & E 4080-3 Log Log Duplex Trig Slide Rule W/ Case USA Vintage
Keuffel & Esser K & E 4080-3 Log Log Duplex Trig Slide Rule W/ Case USA Vintage

$25.00

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Vintage K & E Keuffel and Esser 4181-3 Slide Rule w/ Leather Case
Vintage K & E Keuffel and Esser 4181-3 Slide Rule w/ Leather Case

$29.99

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K&E Polyphase Duplex Slide Rule No 4071 - Copyright 1939
K&E Polyphase Duplex Slide Rule No 4071 - Copyright 1939

$10.00

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Keuffel & Esser Vintage  1967 Slide Ruler K&E Slide Rule Leather Case 68 1648
Keuffel & Esser Vintage 1967 Slide Ruler K&E Slide Rule Leather Case 68 1648

$15.00

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KEUFFEL & ESSER LOGO ENAMEL LAPEL PIN & DECAL SET K+E SLIDE RULE
KEUFFEL & ESSER LOGO ENAMEL LAPEL PIN & DECAL SET K+E SLIDE RULE

$8.50

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1947 K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule w/ Case USA
1947 K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule w/ Case USA

$52.99

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Vtg Keuffel & Esser K&E Polyphase Slide Rule N 4053-3 A Self Teaching Manual
Vtg Keuffel & Esser K&E Polyphase Slide Rule N 4053-3 A Self Teaching Manual

$8.99

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early 1930's K+E Slide Rule N4053-3 Brown Leather Case Keuffel Esser Engineering
early 1930's K+E Slide Rule N4053-3 Brown Leather Case Keuffel Esser Engineering

$19.50

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Vintage Slide Rule K&E 4053 35 Keuffel Esser
Vintage Slide Rule K&E 4053 35 Keuffel Esser

$11.99

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1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA No Case
1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA No Case

$19.00

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Keuffel & Esser K+E Vintage Slide Rule N-4053-3 w/ Leather Case
Keuffel & Esser K+E Vintage Slide Rule N-4053-3 w/ Leather Case

$14.95

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VTG 1952 K+E Keuffel & Esser 4161-1 Slide Rule With Original Case Instructions
VTG 1952 K+E Keuffel & Esser 4161-1 Slide Rule With Original Case Instructions

$49.95

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1943 K&E Slide Rule Manual No. N4081 Log Log Duplex Decitrig Keuffel & Esser
1943 K&E Slide Rule Manual No. N4081 Log Log Duplex Decitrig Keuffel & Esser

$11.50

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K&E N4058W Beginners Slide Rule Vintage Keuffel & Essex Co. with Case  U.S.A.
K&E N4058W Beginners Slide Rule Vintage Keuffel & Essex Co. with Case U.S.A.

$9.99

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K&E Log Log Duplex Trig Slide Rule- 1943, No 4080
K&E Log Log Duplex Trig Slide Rule- 1943, No 4080

$12.00

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Keuffel & Esser K+E Vintage Slide Rule N-4053-3 with Leather Case - Vintage
Keuffel & Esser K+E Vintage Slide Rule N-4053-3 with Leather Case - Vintage

$22.95

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1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA Leather Case
1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA Leather Case

$29.99

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K & E Keuffel & Esser Co. 4180-3 Slide Rule with 7 Page Manual & Leather Case
K & E Keuffel & Esser Co. 4180-3 Slide Rule with 7 Page Manual & Leather Case

$38.00

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Vintage Keuffel Esser K&E Slide Rule 4083-3 Leather Case and Box
Vintage Keuffel Esser K&E Slide Rule 4083-3 Leather Case and Box

$36.99

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KEUFFEL & ESSER SLIDE LOG LOG DUPLEX DECITRIG 68 1210 SLIDE RULE K&E K+E & Case
KEUFFEL & ESSER SLIDE LOG LOG DUPLEX DECITRIG 68 1210 SLIDE RULE K&E K+E & Case

$27.99

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Vintage Keuffel & Esser Co. K&E Slide Rule 4055 With Leather Case Made in USA
Vintage Keuffel & Esser Co. K&E Slide Rule 4055 With Leather Case Made in USA

$20.00

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VTG Keuffel & Esser K&E Favorite Slide Rule #4081 w/Hard Case - See Description
VTG Keuffel & Esser K&E Favorite Slide Rule #4081 w/Hard Case - See Description

$8.99

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Vintage 1961 K&E 68 1100 Slide Rule w/Leather Case Keuffel Esser Deci Lon
Vintage 1961 K&E 68 1100 Slide Rule w/Leather Case Keuffel Esser Deci Lon

$55.82

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Slide Rule VTG K&E Keuffel & Esser Co. 1947 Log Log Duplex Vector 4083-3 READ
Slide Rule VTG K&E Keuffel & Esser Co. 1947 Log Log Duplex Vector 4083-3 READ

$19.99

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VTG 1947 Keuffel & Esser K&E N4081-3 Log Log Duplex Decitrig Slide Rule w/Case
VTG 1947 Keuffel & Esser K&E N4081-3 Log Log Duplex Decitrig Slide Rule w/Case

$19.99

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Vintage Keuffel & Esser K&E 4053-3 Slide Rule w/ Brown Leather Case -super clean
Vintage Keuffel & Esser K&E 4053-3 Slide Rule w/ Brown Leather Case -super clean

$24.95

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NICE ORIGINAL VINTAGE 1940’s K&E KEUFFEL & ESSER 4139 SLIDE RULE
NICE ORIGINAL VINTAGE 1940’s K&E KEUFFEL & ESSER 4139 SLIDE RULE

$24.12

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K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule with Leather Case
K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule with Leather Case

$35.00

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1947 Keuffel & Esser K&E N4080-3 Log Log Duplex Trig Slide Rule
1947 Keuffel & Esser K&E N4080-3 Log Log Duplex Trig Slide Rule

$14.99

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Vintage K&E Keuffel Esser Model 4054 Slide Rule With Leather Case Nice Logo USA
Vintage K&E Keuffel Esser Model 4054 Slide Rule With Leather Case Nice Logo USA

$18.67

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Antique Keuffel & Esser K&E Slide Rule wooden beginner slide rule 4058C 1910's
Antique Keuffel & Esser K&E Slide Rule wooden beginner slide rule 4058C 1910's

$22.99

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Keuffel & Esser K+E Vintage Slide Rule N-4053-3 with Leather Case
Keuffel & Esser K+E Vintage Slide Rule N-4053-3 with Leather Case

$19.95

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🌟 K+E KEUFFEL ESSER LOG LOG DUPLEX SLIDE RULE & LEATHER CASE
🌟 K+E KEUFFEL ESSER LOG LOG DUPLEX SLIDE RULE & LEATHER CASE

$30.00

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K&E Keuffel & Esser Co NY Slide Rule in Leather Case 4088-3 Antique Vintage
K&E Keuffel & Esser Co NY Slide Rule in Leather Case 4088-3 Antique Vintage

$15.00

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Genuine Deci Lon Deci-Lon 10 Vintage Slide Rule K&E Lesther Case
Genuine Deci Lon Deci-Lon 10 Vintage Slide Rule K&E Lesther Case

$69.99

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Keuffel & Esser 20 1/2" N-4053-3 Mahogany Wood Slide Rule in Case, Patent 1937
Keuffel & Esser 20 1/2" N-4053-3 Mahogany Wood Slide Rule in Case, Patent 1937

$24.99

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Vintage K&E Keuffel Esser Model 4081-3 Slide Rule W/case & Book
Vintage K&E Keuffel Esser Model 4081-3 Slide Rule W/case & Book

$35.00

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Antique K&E slide rule with original case And Instructions 4056
Antique K&E slide rule with original case And Instructions 4056

$15.95

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1947 K&E Slide Rule Manual No. N4081 Log Log Duplex Decitrig Keuffel & Esser
1947 K&E Slide Rule Manual No. N4081 Log Log Duplex Decitrig Keuffel & Esser

$20.00

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K&E Slide Rule Manual Set Keuffel & Esser Log Log Duplex No. 4081 & 4083
K&E Slide Rule Manual Set Keuffel & Esser Log Log Duplex No. 4081 & 4083

$27.99

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Vintage KEUFFEL & ESSER N4053-3 SLIDE RULE PATENT JUNE 5 1900 Antique SUPER NICE
Vintage KEUFFEL & ESSER N4053-3 SLIDE RULE PATENT JUNE 5 1900 Antique SUPER NICE

$14.75

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Vintage K&E Co. Magnifier for Slide Rule 4185B in Original Box
Vintage K&E Co. Magnifier for Slide Rule 4185B in Original Box

$60.00

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K & E 1939 Manual #4070, POLYPHASE DUPLEX TRIG Slide rule, 87 pages
K & E 1939 Manual #4070, POLYPHASE DUPLEX TRIG Slide rule, 87 pages

$8.95

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Vintage Keuffel & Esser Vintage Slide Ruler K&E Slide Rule 046227 Rare 4081-3
Vintage Keuffel & Esser Vintage Slide Ruler K&E Slide Rule 046227 Rare 4081-3

$35.00

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Vintage K&E slide rule New in Box (it was opened to show contents)
Vintage K&E slide rule New in Box (it was opened to show contents)

$107.50

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K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule
K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule

$17.95

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KEUFFEL & ESSER K&E CO NY Slide Rule with Black Paperboard Case Vintage
KEUFFEL & ESSER K&E CO NY Slide Rule with Black Paperboard Case Vintage

$24.04

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Vintage Keuffel & Esser K+E Slide Rule 4088-3 with Leather Case -
Vintage Keuffel & Esser K+E Slide Rule 4088-3 with Leather Case -

$14.39

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K&E 68 1100 Slide Rule Leather Case Keuffel & Esser Deci-Lon 10 1961
K&E 68 1100 Slide Rule Leather Case Keuffel & Esser Deci-Lon 10 1961

$69.99

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K&E No 68 2047 Slide Rule Manual
K&E No 68 2047 Slide Rule Manual

$8.00

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VINTAGE K&E Keuffel & Esser Slide Rule 4095-3,  USA W Manual & Case
VINTAGE K&E Keuffel & Esser Slide Rule 4095-3, USA W Manual & Case

$24.95

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K&E Keuffel & Esser 4181-3 Slide Rule in Original K&E Orange Leather case
K&E Keuffel & Esser 4181-3 Slide Rule in Original K&E Orange Leather case

$18.95

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K&E Deci-Lon Slide Rule 68-1100 w/Leather Case, Box & Manual ~ Keuffel & Esser
K&E Deci-Lon Slide Rule 68-1100 w/Leather Case, Box & Manual ~ Keuffel & Esser

$275.00

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Vintage K&E 68-1100 Slide Rule With Leather Case Keuffel Esser Deci- Lon
Vintage K&E 68-1100 Slide Rule With Leather Case Keuffel Esser Deci- Lon

$79.99

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Keuffel & Esser K&E Polyphase Duplex Decitrig Slide Rule 4071-3
Keuffel & Esser K&E Polyphase Duplex Decitrig Slide Rule 4071-3

$10.00

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A Slide Rule With Intellect And Horse Sense Don Herold 1956 K&E Slide Rule
A Slide Rule With Intellect And Horse Sense Don Herold 1956 K&E Slide Rule

$29.99

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1948 4th Ed K+E 4080-3 Slide Rule Black Leather Case 10" Mahogany Duplex Vintage
1948 4th Ed K+E 4080-3 Slide Rule Black Leather Case 10" Mahogany Duplex Vintage

$15.99

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K & E Keuffel & Esser Co. 4053-3 Polyphase Slide Rule Leather Case New in Box
K & E Keuffel & Esser Co. 4053-3 Polyphase Slide Rule Leather Case New in Box

$58.00

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Keuffel & Esser K&E Indicator Log Duplex Vector Slide Rule Soroban Abacus Leads+
Keuffel & Esser K&E Indicator Log Duplex Vector Slide Rule Soroban Abacus Leads+

$69.99

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Keuffel & Esser DECI-LON 68 1100 Slide Rule & Case c 1947, 1961 with Book
Keuffel & Esser DECI-LON 68 1100 Slide Rule & Case c 1947, 1961 with Book

$249.99

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