B64-745
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Item no.: 170943353756
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B64-745. COMPUTING RULE. W. & L.E. Gurley. Four-fold, two-foot brass bound boxwood rule. Patented in 1915 by Edward D.N. Schulte and manufactured by Gurley. Contains two sets of logarithmic scales, one on each side, for measuring the volume of either cylindrical or rectangular containers. Marked "Patent Applied For" so an early version. Straight, tight and clean, noting one small stain. A very uncommon Gurley tool. From the collection of Chuck Morgan. Condition: Fine, Estimate: 300-600
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