Countergage
From BiblePortal Wikipedia
Countergage [1]
(n.) 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.
Countergage [1]
(n.) 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.