noun
: a gauge for testing angles (as of lathe centers, screw threads, or the points of cutting tools) or for testing the setting of a thread-cutting tool with reference to work under way
noun
: a gauge for testing angles (as of lathe centers, screw threads, or the points of cutting tools) or for testing the setting of a thread-cutting tool with reference to work under way
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012