Protractors by Rainyb. Details:Rainyb digital angle finder tools will bring reliability and convenience to your work. Widely used in woodworking furniture, building materials decoration, schools, home DIY, mechanical processing and other fields. 1. 360 Degreeinternal and external angle measurement, you can keep the data at any position to facilitate the reading after measurement. 2. Great Locking Feature The tightloose knob works well and you can set the Angle Finder to the tightness that suits your use. 3. The full screen super large LCD displays the measurement data, and the reading is simple and convenient. 4. Fine textured engineering materials, lightweight, wear resistant, non deformed, non scratch. Feature: 1. Four in one multi function digital protractor: A: Measuring angle 0 360 Degree; B: Engraved line length: 190 mm7 inches; C: Horizontal and vertical measurement; D: Plane universal measurement; 2. Enlarged and thickened knobs, easy to tighten, convenient and reliable...