'Countergage' definitions:

Definition of 'Countergage'

From: GCIDE

Countergage \Coun"ter*gage`\ (-g[=a]j`), n. (Carp.) An adjustable gage, with double points for transferring measurements from one timber to another, as the breadth of a mortise to the place where the tenon is to be made. --Knight. [1913 Webster]