Digital Angle FinderThe digital angle finder with a hole for hanging the digital angle level, is designed for industrial applications that involve setting exact angles, such as niches and bays, sloping roofs and handrails. Backlit LCD display: Comes with a backlit LED display which can read the data clearly even under low light. High Accuracy: Measurement accuracy: 0.5, increase/decrease angle: 0.1, angle range 0-225, which allows you to accurately measure the angle with its horizontal and vertical level. Mechanical Lock: There is a lock button to keep the angle invariable in the line process and a hold button to lock the angle. Auto-off: It is powered by a 9V battery, which is included and can automatically shut down after 5 minutes of non-use to extend battery life.