VINTAGE ACUMATH NO. 400 SLIDE RULE WITH CASE NICE CONDITION MADE IN USA

Acu-Math No. 400 12" slide rule in Leather Case Made in USA

Vintage Acu-math Slide Rule - No. 400-With Case - Made in USA

Acumath No. 400 Slide Rule with Case Made USA Vintage

Vintage Slide Rule: ACU-MATH no. 400 With Sleeve Made In USA

vintage Acu-math no. 400 slide rule w/ case, good condition made in U.S.A.

Acumath No. 400 Slide Rule with Case Made USA Vintage

Acumath Engraved Slide Rule. Plastic. Made In USA with Original Case Vintage