Frederick Post Slide Rule No.1462 Duplex c1945 with Case
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Frederick Post Slide Rule No.1462 Duplex c1945 with Case:
$14.99
Frederick Post No.1462 Duplex c1945
Made in U.S.A. - Note: White Plastic Ends
Front Scale
LL0,LL00, A [ B, K, L, C ] LL3, LL2, LL1
Back Scale
T, DF [ CF,CIF,CI, C ] D, S, T