noun
: a device that consists of a steel straightedge at whose extremities buttons are attached with their centers equidistant from the straightedge and that is used to locate work at desired angles on angle plates
noun
: a device that consists of a steel straightedge at whose extremities buttons are attached with their centers equidistant from the straightedge and that is used to locate work at desired angles on angle plates
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012