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 for marking, marking, and layout on various joinery or other woodwork. Hard ebony and wear-resistant 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-resistant, rust-proof and corrosion-resistant. 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 for different wood marks. Smooth brass slider: the brass adjusting slider slides smoothly, with a small handle at the end, which is ergonomically designed to facilitate pulling the slider. It is firmly fixed on the guide rail by tightening the screws, so it will not be displaced during use. Professional woodworking tools: The woodworking scriber is 6.4 inch in length, with fine workmanship and smooth surface. It will not hurt your hands during use, helping you finish woodworking work quickly. This is a professional woodworking tool. Color: as shown Material: wood Package Contents: 1 x scribe tool