True Bar Flatness Tester and Base Structure Grooving Tool

Description

The true bar is round and very accurate. 6" x 3/4" I just roll it along the base of the ski, it works very well.
The structure tool has two grove width patterns. Pick the one you want,Just apply pressure and drag along base of ski to form groves for wax. 6" x 1" I can't remember the manufacturer.
Base should be brushed after wax dries so that the structure is coated and not filled in. Please see pictures.