Practical woodworking tenon gauge: Our woodworking tenon gauge is designed to have 1 nail on one side and 2 nails on the other side, which is used to draw single or double lines, and is suitable compatible marking, marking, and layout on joinery or other woodwork. Hard ebony and wear- brass materials: the main body of the marking scriber is made of high hardness ebony, and the guide rail, backing and screws are inlaid with pure copper bars to make the scriber wear-, rust-proof and -. Wide adjustment range of nail space: the distance between two nails can be adjusted by rotating the screw knob at the top. The operation is simple. The adjustment range of 0.2 inch - 4 inch is wide enough to meet your requirements compatible different wood marks. Smooth brass slider: the brass adjusting slider slides smoothly, with a small handle at , which is ergonomically designed to facilitate pulling the slider. It is firmly fixed on the guide rail by tightening the screws, so it not be displaced during use. Professional woodworking tools: The woodworking scriber is 6.4 inch in length, with fine workmanship and smooth . It not hurt your hands during use, helping you woodworking work quickly. This is a professional woodworking tool. Color: as shown Material: wood Package Contents: 1 x scribe tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.