characteristic: Multifunctional three-dimensional carpenter's marking angle ruler-including T-shaped marking, square ruler, angle measurement and dovetail joint, to meet marking requirements. 10-90 arbitrary marking-30, 45 and 60 fixed angles are available to meet marking requirements. Dovetail joint Marking Gauge-Two specifications of dovetail joint template, which can be used according to actual needs. Multi- disassembly-different combinations are not restricted by the angle, and can be used alone or in combination. High-quality material selection-the product is with high-quality aluminum alloy, precision machining, exquisite workmanship, beautiful and durable overall. describe Name: Woodworking Ruler Material: Aluminum alloy colour: Red Package Contents: 1 x Woodworking marking ruler 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.