Vintage Concise Circular Slide Rule Case Simmons Precision Nash Controls

Vintage Fullerton No.1450 Circular Slide Rule Calculator Japan w/ Case

Concise Circular Slide Rule Original Case Japan NOS

Scientific Instruments Co. Circular Slide Rule 1962 No. 1290 with Case

Pair Vintage Concise Circular Sliderule 28N - Made in Japan w/ Case- Vulcan

Concise ruler 28N English Version Circular slide rule made in Japan *US seller

Vintage Pickett Microline 140 Yellow Slide Rule with Case in Excellent Condition

Vtg K&E K-12 Prep Slide Rule 68 1892 W/ Case & booklet USA made