Concise Ruler Circular Slide Rule No. 300 100829 Made IN JAPAN 110mm

Concise Ruler Circular Slide Rule No. 300 100829 Diameter (approx.) 110mm F/S

Concise Ruler Circular Slide Rule No. 300 100829 Made IN JAPAN 110mm

Concise Ruler Circular Slide Rule No. 270N 100812 F/S w/Tracking# New from Japan

Concise 28 N Circular Slide Rule - Smith's / Smith Welding Equipment - Sliderule

Concise 100829 Ruler Circular Slide Rule 300 Diameter 110mm 4.3inch new F/S

Concise Ruler Circular Slide Rule No. 300 110mm