Lee Valley Center-Finding Rule

This stainless-steel rule, with the front face graduated both ways from 0 in the center, has many uses in marking and layout, all related to finding the center of a piece.

Reading conveniently from left or right, it saves mathematical calculations, which are a basic source of error in woodworking. The front is graduated in 16ths and 32nds, the back in 32nds and 64ths.