Vtg Acu-Rule Slide Rule w/Original Box ~ A B C D K Scale (Damaged Box)

Vintage Aristo-Darmstadt 867 Slide Rule Calculator, Leather Case Hamburg Germany

Acu-Math Slide Rule w/ Sleeve / Original Box

Vtg Acu-Rule Slide Rule w/Original Box ~ A B C D K Scale (Damaged Box) Festus

Vintage Mannheim Professional Acu-Math No.311 Slide Rule & Case

2 Vintage ACU Math Slide Rule No 584 & N0. 400 w/case. Log Decimal Trig Rulers

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

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