STAEDTLER Engineer Aluminum Triangular Scale, 12in Metal Ruler With Color-Coded Grooves, Weather-Resistant, 6 Scales (10-60 Parts Per Inch)

K&E Keuffel & Esser 68-1130 Slide Rule W/Leather Case Deci Lon 5

Chgimposs 12" Adjustable Sliding Combination Square Ruler & Protractor Level Measure Measuring Set, Inch/Metric

Mitutoyo 182-125, Steel Rule, 12"/300mm ( 1/32, 1/64", 1Mm, 0.5Mm), 3/64" Thick X 1" Wide, Satin Chrome Finish Tempered Stainless Steel

Intoy 12 Inch Triangular Engineer Scale Ruler, Anodized Solid Aluminum Core With Laser Etched Scales, Imperial Scale - 1:10, 1:20, 1:30, 1:40, 1:50, 1

Mitutoyo 182-203, Steel Rule, 6" (5R), (1/32, 1/64, 1/10, 1/100"), 1/64" Thick X 1/2" Wide, Satin Chrome Finish Tempered Stainless Steel

STAEDTLER 12in Engineer Scale Ruler - Triangular Engineering Ruler With 6 Scales(10-60 Parts/Inch), Color-Coded Grooves, Plastic

Vintage Mid Century Modern Ricoh 11" Drafting Engineering Calculator Slide Ruler By Sun Hemmi Made In Japan. FREE Shipping

Mitutoyo 182-111, Steel Rule, 150Mm, (1Mm, 1/2Mm), 1.2mm Thick X 19mm Wide, Satin Chrome Finish Tempered Stainless Steel

4Pcs 12 Inch Metal Ruler, Stainless Steel Rulers With Cork Backing, Imperial And Metric, Non-Slip Prevent Ink Leakage. For School, Office, Engineering

12-Inch Architectural And Engineering Scale Ruler Set (Imperial) | Laser-Etched Aluminum Triangular Drafting Tool | For Architect And Civil Engineer

NOKKO 12 Inch Architectural And Engineering Scale Ruler Set - Professional Architect And Engineer Scale Rulers For Drafting, Architects, Engineers,

LAWRENCE ENGINEERING Service Slide Ruler Model 10B Made In Peru, Indiana United States Original 1960S In It's Box

Duct Calculation Slide Rule

Youoklight Stainless Steel Ruler 2-Pack, 12 Inch & 30 cm Metal Ruler Dual Scale, Flexible Yet Durable Metric And Imperial For Drawing, Engineering,

Vintage Logarithmic Slide Ruler Logarex, 1960S Engineering Tool

Pocket Size Small Slide Rule Plastic Logarithm Rule Soviet Vintage Logarithmic Ruler Measuring Stick USSR Engineering Tools Math Teacher 504

Vintage Engineer Slide Rule Art | 1904 Slide Rule Patent | Gift For Engineers | Office Wall Art | Historical Engineering Decor

Vintage 1947 Keuffle & Esser Co. N4801-3 Engineering Slide Ruler W/ Leather Case. Keuffel & Esser Co. Drafting Tools.

Vintage Frederick Post Versalog Engineering Slide Rule IN Original Leather Case. Slide Rules.

Mitutoyo 182-101, Steel Rule, 6" (4R), (1/8, 1/16, 1/32, 1/64"), 3/64" Thick X 3/4" Wide, Satin Chrome Finish Tempered Stainless Steel, Clear

Vintage Soviet Logarithmic Engineer Student Slide Rule Ruler Leningrad 1970

Vintage Engineer Slide Ruler Pickett Model N1010-ES TRIG 1959 With Leather Case

SUN Hemmi 4.75" Long Pocket Mini Slide Rule Ruler W/Case. Rogers Engineering. Slide Rules.

Slide Rule Plastic Logarithm Rule With Manual Soviet Vintage Logarithmic Ruler Measuring Stick USSR Engineering Tools Math Teacher Used

Pickett & Eckel Model 2 Deci Log Log Engineering Slide Rule Beige With

Starrett Full Flexible Steel Rule With Satin Chrome Finish, Quick Reading, And Inch Graduation - 16R Graduation, 6" Length, 1/64" Thickness - C316R-6