Dual- parallel scribing tool, multi-function scribing tool, arc gauge, straight line scribing gauge, adjustable metal woodworking scribing tool. Adjustable ruler-120mm cylindrical vernier caliper, the ruler can be adjusted to different lengths, and can be used for parallel marking, tenon and tenon marking, arc marking, wire cutting marking, etc. All Metal Ruler Body-Aluminum alloy , stainless steel ruler, brass fastening nuts, all metal structure, suitable for various environments, anti-rust, durable, convenient for your woodworking. Y-type roller guide rail, edge marking at any angle can be handled, and round and straight edges can be marked with parallel scales for easy processing. All the configurations are complete, you can use it directly when you it, no additional accessories are needed, it is a fast and efficient woodworking marking tool. Colour:Silver Material:Aluminum stainless steel Size:28x10.5x6.8CM Package Contents: 1 * Multifunctional thread 2 * pencil 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.