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This is a 10-inch slide rule made of mahogany wood and paper covered plastic with nine scales. The scales are: A, B, C, and D, Log-Log, Reciprocal, Sin and Tangent. On the back are tables for Decimal Equivalent Of Fractions, Ultimate Strength And Moduli Of Materials, Densities And Thermal Properties Of Metals, Densities Of Other Materials, Useful Equivalents. The cursor is plastic with single hairline. The rule is in its original black cardboard two piece, box with care manual. The rule and the box are in very good condition. |
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