Depth Ruler Measuring Saw Slot Gauge Aluminum Alloy 5 - 40mm Slotting Cutting Tool Feature:1. Depth Measurement: Wide measuring range of 5-40mm makes the depth ruler suitable for accurate measurement of saw seam.2. Practical Application: It can be widely used for quick positioning of table saw or router for easy grooving, cutting and so on.3. Lockable design: able to lock the inner and outer sizes and compare them with other fittings to simplify the operation.4. Aluminum Alloy: Made of high-quality aluminum alloy, which is not easy to deform, and also very durable.5. Simple Handling: With small size and light weight, convenient carrying makes it suitable for indoor and outdoor use. Specification:Item Type: Depth Measuring RulerMaterial: Aluminum Alloy Color: Red & GoldMeasuring Range: Approx. 5 - 40mm / 0.2 - 1.57in Function: Can be used to measure the seam of the saw. Package List:1 x Depth Measuring RulerNote:Please allow 1-2cm error in manual measurement.