Vintage Frederick Post (POST) 1460 Versalog Slide Rule w/ Leather Case

Sama and Etani reference tables and circular slide rule

Sama & Etani Vintage Professional Concise Science Tables and Circular Slide Rule

Vintage Concise CTCS-552 Circular Slide Rule Conversion Tables NUPRO Calculator

1968 vintage Sama & Etani Concise CHEMICAL TABLES and Circular Slide Rule

Antique K& E Ever-There Slide Rule, 4097D, w/ leather case, box and instructions

VTG 1960 Monsanto CTCS-552 Concise Science Tables & Circular Slide Rule

Vintage 1969 Concise Circular Slide Rule with Science Tables Sama & Etani