SUN HEMMI No. 255 SLIDE RULE RULER W/CASE

K & E Keuffel & Esser Co. 4181-3 Slide Rule with Leather Case Vintage Made N USA

Vintage EUGENE DIETZGEN Maniphase Multiplex SLIDE RULE RULER 1732 w/ Case USA

Vintage Charles Bruning 2401 5” Slide Rule Brown Leather Case Creole Made In USA

Vintage Pickett & Eckel Slide Rule Model No. 2 Deci Log 1947 USA Rare Brown Case

Vtg Pickett Slide Rule N902-ES W/ Case & box

VINTAGE K&E/KEUFFEL & ESSER N4053-5 20" WOODEN POLYPHASE SLIDE RULE & Case!

Vintage Aristo / Charvoz No. 0970 Slide Rule with Leather Case – Made in Germany