This gauge is a highly accurate measuring device developed specifically for woodworking. It can be used to and router bit height as well as the distance from a router fence to the bit. The base allows easy positioning for measurements on cast iron table tops and the ground anvil insures long term measuring accuracy. Features - Color: Black. - Material: Plastic. - Size: 27.00 x 9.00 x 2.50cm/ 10.61 x 3.54 x 0.98 inch. - Measuring range: 0-150m. - Power supply voltage: 3V. - This height gauge is made from engineering plastic, this height gauge is and has a . - Designed with standing feet so it would firmly hold onto ferromagnetic surfaces, more convenient. - This is a dual-purpose gauge, can be used for measuring object height and also aperture depth, 2 in 1 tool. - This gauge supports mm, inch and fraction inch unit that will meet you different unit requirements. Digital display for easy reading. - Takes with reset button for zeroing for relative measuring, which can be used to the height of in . Package list: 1 x height gauge