TM-1 Tenonmaker Folding ruler They are really designed to

They are really designed to be used as insulated pliers

These straight edges are made from stainless steel or steel that has been hardened to HRC55 and carefully stress relieved before final grinding and lapping so that their dimensions will remain stable over time and with changes in ambient temperature

hardened to 60 to 62 Rc

All are 6-1/2" long and 1/4" hex shanks

TM-1 Tenonmaker Folding ruler They are really designed toThe TM 1 Tenonmaker is a very useful tool that is precision machined from anodized aluminum. It simplifies the process of making an accurately sized tenon to fit an existing mortise. It works with any cutter that leaves a clean, repeatable kerf, such as table saws, router tables, or the Jointmaker Pro. For mortise and tenon joints, typically most woodworkers will make the mortise first, either by hand, or using a router, mortising machine etc. They