describe This is a portable digital protractor that is small and compact for home or industrial use. It is also highly accurate and easy to use. feature: Practical and hard aluminum alloy shell, long service life. The strong magnet at the bottom adsorbs the workpiece, which is convenient for measurement. Data hold and slope functions, large LCD backlight display, easy to read measurement data. Relative/absolute measurement interchange in any position. Portable size, easy to use with other measurement tools to expand the measurement range. Widely used in domestic or industrial wood processing industry (especially furniture manufacturing). Specification: Material: aluminum alloy + ABS Display: LCD backlight display Measuring range: 4*90 Resolution: 0.05 Accuracy: 0.2 Repeatability: 0.1 Battery: 2 * AAA batteries (not included) Working temperature: 0-40 Model: green light Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.