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Unusual slide ruleby Hughoneill
Property of U.S. Government 70272 CG-4A LRW-1 Load adjuster for aircraft never seen one before.by GeodeJem
My 1928 GE Complex slide rule (Cylinder type)by Schoonke
War use or not/by grwjan
Additions or tax scale???by Printsid
1960 - Dietzgen Slide Rule Instruction Manualby aghcoll…
enginners/students slide rule-possibly 1940s or 50s?by michael…
K & E Slide Ruleby zzzzipster
Pickett All Metal Slide Rule Model N 200-ESby nfalcone
Miller's Beam and Scale Ruleby HolDol