This vintage scale is considered a U.S. standard, machine divided, triangular white edge scale for architects and mechanical engineers. One side is marked; Dietzgen - 1655B - Made in U.S.A. - Excello. It is a 6” rule with the following divisions; 3/32, 3/16, 1/8, ¼, 3/8, ½, ¾, 1, 1 ½, 3 in. to the foot, 1/16 in.. It looks as though it might be made entirely of a plastic material.
It measures about 6 ¾” by 15/16” each side and is in good condition with minor scratch wear. There are some red markings as shown in the photos which may have been from the previous user.
The pictures are not shown at actual size. Please refer to the description for actual measurements.
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Item ID: 19157