Feature: 1. Crafted from CNC machined anodized aluminum alloy steel, features easy to read engraved scales. 2. Internal O‑ring mechanism swivels during operation and ensures & precise read on inside/outside corners. 3. The miter saw protractor is made of high quality aluminum alloy material, which is durable. 4. Very suitable for trimming, hemming and other various woodworking applications. 5. Perfect for crown molding, trim work, plumbing, and a variety of other carpentry applications. Specification: Item Type: Miter Saw Protractor Material: Aluminum Alloy Product Size: Approx. 6.4x18.5cm/2.5x7.2in Purpose: Used for Measurement and Positioning Compatible: For Trimming, Hemming and Other Various Woodworking Applications Package List: 1 x 360 Horizontal Angle Gauge 1 x Manual Note: 1. Before starting the measurement, please confirm whether the measuring tool is reset to zero. 2. Check whether the measuring surface of the tool is corroded, worn or scratched. Avoid affecting accurate readings.