Vintage Diwa Denmark Polylog No.930 Slide Rule Ruler With Leather Case

Rare vintage Stanley Stay Rule (circular slide rule - GPO / War Department)

Vintage PIC Slide Rule No 251 British Thornton in Leather Case. Made In England

Vintage K & E Keuffel & Esser Co. N. Y. Slide Rule Leather Case Drafting

Blundell Omega 405 Slide rule Vintage Made in England With Original Case. Mint.

Vintage BRL P16D pocket small slide rule in brown leather case made in England

Vintage 6” Regal No A50S Slide Sliding Rule & Case Measuring Drawing Old Tool

Vintage Hemmi SUN No 40RK Bamboo Slide Sliding Rule & Case Measuring Old Tool