Precise: Equipped with laser-etched precision scales that are easy to read, this protractor enables accurate angle measurements, miter cuts, finishing work, and a wide range of other woodworking applications. O-shaped design: The protractor features an O-shaped design for use during operation, ensuring smooth and precise readings; inner and outer parts are made of exact aluminum alloy. Easy to transport: These portable electric tools for outdoor use are made of lightweight plastic, highly resistant to corrosion and wear, which extends their lifespan. Additionally, their compact size and lightweight material make them easy to carry. Wide application: Whether you're a professional or a hobbyist, this protractor is perfect for your sawing, miter cuts, carpentry, plumbing, ironwork, and more. Easy to use: Designed for outdoor use, the protractor features a knob and two easy-to-read zoom scales to simplify your work with direct readings and less complex operation. Designed for outdoor use, this protractor has an easy-to-read knob and two zoom scales that provide direct readings for your work, reducing the complexity of use. Note: All measurements are manual, please allow a tolerance of 1 to 3 cm due to differences in light and display, which may result in slight color differences. The actual received product should be considered.