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

Acu-Math No. 400 Slide Rule with Protective Cover Made in the USA

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

Acumath #400 Slide Rule With Case Vintage

Acumath No. 400 Slide Rule with Case Made USA Vintage

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

Slide Rule, Vintage ACUMATH No. 400 Slide Rule with Pouch, Made in USA BH

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