Features: 1MAKE DOVETAIL JOINTS: This dovetail jig template lets you easily and correctly make repeatable, strong, accurate dovetail joints 2CONTROL POSITION: By controlling the positioning of the teeth and the milling cutter, the jig is easy to accurately control the size of the bumps 3PREFABRICATED RAILS: Dovetails are made with prefabricated male and female rails to meet standard dimension used in furniture manufacturing 42 SCALESDovetail jig tenon caliper come with metric and inch scale, support accurate reading, can meet your different using needs 5FINE AND ACCURATE: Made of good quality aluminum alloy material after CNC machining, the caliper can provide fine scale, very reliable Item Type: Dovetail Jig Tenon Caliper_x000D_ Material: Aluminum alloy_x000D_ Purpose: Operate the machine with a special milling cutter, specially used for accurate control of mortise joints 1 x Dovetail Jig Tenon Caliper