Vintage Slide Rule with Leather Case

Vintage 1979 Metric Converter Slide Rule Chart Learning Research Inc. Woodbury

Vintage Lafayette 99-7102 Vectorlog Bamboo Slide Rule

Vintage 1954 GENERAL CABLE Current Ratings Conduit Sizes Motor Wiring Slide Rule

Frederick Post Versalog Slide Rule 1460 Hemmi Japan Brown Leather Case Vintage

Teledyne Post Model 44CA-600 Versalog 10" Slide Rule w/ Leather Case Hemmi Japan

Vintage CALGON Cooling Water Calculator Slide Rule Chart Industrial Engineering

VINTAGE KAISER ALUMINUM CIRCUIT CALCULATOR SLIDE CHART