Vintage TAD Products Corporation Circular Slide rule with case constants & data For Sale -

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Vintage TAD Products Corporation Circular Slide rule with case constants & data :
$9.95

Vintage TAD Products Corporation circular slide rule. It seems to be for electrical mostly. It has a table of conversions and constants that is stored in the body. Comes with case. Says made by concise products 1969.Free shipping to U. S. only via first class mail. 1need$pace Store

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