8 Piece Set of Vintage Paper Scales, Calculation Tables, Conversion Scales

Description

Up for sale is a lot of 8 vintage paper scales, conversion table charts. Hopefully the pictures will show you what they are. There is a conversion table chart, a heli-coil chart, an o-ring chart, a torque wrench scale, a red nut selector guide, the plastic sheet is a rolled tubes molded rod chart. They all are in nice condition for their age. The dates range from 1958 to 1965. Please contact me with any questions. Thank you.