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

Vintage ~ Mannheim Type Slide Rule ~ Acu-Math No. 400 w/Case & Manual

Vintage Slide Rule Acumath No. 400 with Case - Has Ink Spots - View Pics

Vintage Pocket SLIDE RULE: ACU-MATH no 400 with Case

Acumath #400 Slide Rule With Case Vintage

Vintage Mannheim Type Acumath Slide Rule No. 400 With Case and Manual USA

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

Sterling Acumath No 400 Slide Rule Vintage White Case Instruction Good Condition