Keuffel & Esser Log Log Decitrig Duplex Ruler

Keuffel & Esser Company 4081-5 twenty inch mahogany slide rule coated with white celluloid on both sides and held together with metal end pieces, in a protective leather case. Marked. Case measures ap

DESCRIPTION: Vintage Keuffel & Esser Co. log log duplex decitrig slide rule featuring marks for calculating various mathematical functions from arithmetic to trigonometry to algebra. Includes orange l

Seven (7) Keuffel & Esser (K&E) duplex slide rules, including two (2) 4160 Chemist's slide rules; one (1) N4081-5 20" Log Log Decitrig slide rule; one (1) 68-1200 Log Log Duplex slide rule; one (1) 40

KEUFFEL & ESSER CO 4081-3 LOG LOG DEPLUX DECITIRIG WITH CASE PATS; 2500460, 2168056,2170144,2285722, 2422649 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING

KEUFFEL & ESSER CO 4081-3 LOG LOG DEPLUX DECITIRIG WITH CASE PATS; 2500460, 2168056,2170144,2285722, 2422649 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING

A compiled grouping of measuring tools. Rulers, K&E 4080-3 Log Log Duplex trig slide rule. Noris USA drafting set, Correx Gramm meter, rulers etc

BOOK AND SLIDE RULE LOT ACUMATH ACUMATH NO. 500 MATH, STERLING 10' SLIDE RULE NO. 584, KEUFFEL & ESSER C CLOTH, PICKETT BOOK "HOW TO USE BASIC SLIDE RULES", "THE LOG LOG DUPLEX TRIG SLIDE RULE" BOOK K

Adjustable, Glass Indicator, Cracked at Glass Indicator(See pics) Case. SN- 198110

A duo of large size vintage slide rules by K&E, including: one No. 4080-5 Log Log Duplex Trig and one No. 4051. Both clean and in functioning condition with individual leather cases. *note - both curs

Also includes: Goodell-Pratt Company hand drill, Stanley reticulated drill, K & E Log Log Duplex slide rule and Pickett slide rule.

A collection of six vintage slide rules by K&E, including: one N4080-3 Log Log Duplex Trig SN#559691, one 4092-3 SN#257384, one N4053-3 SN#037321, one N4041 Mannheim, one 4055 Favorite Mannheim, and o

Vintage Keuffel & Esser Slide Ruler with Leather Case *In-house domestic shipping for this item: $25.35

KEUFFEL AND ESSER CO SLIDE RULER IN LEATHER CASE Vintage slide ruler in leather carrying case made by Keuffel & Co. N.Y. Pat. June 5, 1900 *end of case has detached, name wr

PICKETT MODEL 803-T SLIDING RULE WITH CASE SYCHRO-SCALE LOG LOG | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE -H

PICKETT 244 MODEL N3-T LOG LOG SPEED RULE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -NO CASE -HS5721

SP PRECISION STERLING NO. 594, DECIMAL TRIG LOG LOG WITH BOOKLET | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE (

Ten (10) Keuffel & Esser (K&E) Slide Rules. 1st item: K&E 4061 Polyphase Duplex slide rule. Comprised of two-sided celluloid coated mahogany, with frameless glass cursor with plastic edges held togeth

Keuffel and Esser (K&E) slide rules, including one (1) Nordell Sewer Slide Rule; one (1) 4160 Chemist's 10" Mahogany Duplex slide rule; and one (1) 4088-3 Polyphase Duplex Slide Rule. All comprised of

KEUFFEL & ESSER CO NO. 461294 PAT. APRIL 1'24 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -DAMAGED CASE (SEE IMAGES)

KEUFFEL & ESSER CO NO. 4053-3 BOX CASE BOOKLETS POLYPHASE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -GREAT GREEN L

KEUFFEL & ESSER CO 4061 6" | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE (DAMAGED) -HS5721

LOT 2 SLIDE RULER AND SLIDE RULE BOOK CONTAINS: "THE SLIDE RULE AND LOGARITHMIC TABLES BY CLARK, PICKET n902-es SIMPLEX TRIG SLIDE RULE, KEUFFEL & ESSER CO n4053-3 PAT1,934,232 | VINTAGE COLLECTIBLE S

KEUFFEL & ESSER CO. NY NO. 4002-3 SLIDE RULE pAT jUNE5'00, DEC 22 '08, APRIL1 '24 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VIN

PICKETT,MODEL N600-ES LOG LOG SPEED RULE 6' W/CASE | VINTAGE COLLECTIBLE SLIDE RULER ARCHITECT ALGEBRA/TRIGONMETRY -LEATHER CASE -HS5621