Function: Made of engineering plastic, high strength, wear-resistant and durable. Designed with magnets on the standing feet to hold the ferromagnetic surface firmly Compact size, light weight, easy to carry. Use a reset button for zero adjustment for relative measurement. The digital display is specifically designed for woodworking that can be used to set the height of the saw blade. Specifications: Material: Plastic Weight: 377g / 13.3oz Measurement Range: 0-150mm