Steel Weight Calculator Solar Steel Corp. 1947
This is a nice clean slide calculator, marked "STEEL WEIGHT CALCULATOR FOR SMALL SIZES AND STRUCTURAL SHAPES SOLAR STEEL CORP. RIVER ROUGE 18 MICH.". It is double sided with "STRIPS AND SHEETS, ANGLES, BARS, WEIGHTS, STRUCTURAL SHAPES" sizes and weights on one side, and "STEEL WEIGHT CALCULATOR FOR LARGE SIZES AND CIRCLES" on the other, including "PLATES, ANGLES, BARS, CIRCLES". The calculator is made of a coated paper card, one inner slide card and one doubled outside card, and is in very good condition overall, with little wear, the inner card slides smoothly, and the variable numbers/text align well in the windows, a little minor edge wear, and all the text is easy to see and read. It is rare, and is marked with a copyright date of 1947. Quite nice!
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