Features 1、Depth Measuring: The wide measuring range of 5‑40mm makes the depth ruler suitable for accurate saw seam measurement. 2、Practical Using: Can be widely applied to quickly set up a table saw or router for easy grooving, cutting and so on. 3、Lockable Design: Able to lock inside and outside sizes and compare them to other fittings to simplify the operation. 4、Aluminium Alloy: Made of high quality aluminium alloy material, which is not easy to deform and also very durable. 5、Simple Carrying: With compact size and light weight, the convenient carrying makes it suits for indoor and outdoor use. Specification Item Type: Depth Measuring Ruler Material: Aluminium Alloy Colour: Red and Gold Measuring Range: Approx. 5 ~ 40mm / 0.2 ~ 1.57in Function: Can be used to measure saw seam. Package List 1 x Depth Measuring Ruler