·Four sided strong magnets - The digital angle measuring instrument has strong magnets on all four sides, firmly attached to the measuring object to ensure accuracy and prevent easy detachment. Three easy-to-use buttons can activate the built-in red laser lines on both sides. The zero point button can effectively achieve absolute or relative angle measurement.

·360°/4×90° measure angle, , and the measurement value on the display screen will automatically adjust. The hold button can remember measurement values, making it easy to measure in narrow spaces, inverted situations, and curved pipelines. When installed upside down, the displayed value will automatically flip with an accuracy of ± 0.2 ° and a resolution of 0.05 ° to ensure the accuracy of each measurement.

·The digital angle measuring instrument has an easy to read display screen and can obtain clear measurement results under any lighting conditions. IP54。 The palm sized and compact angle measuring instrument is designed for easy portability, rechargeable, ultra long standby time, and a power display for timely charging.This tool has the functions of digital level, angle finder and laser lines(Class II, Output

·Sturdy magnetic base - connected to ferromagnetic surfaces such as pipes, conduits, woodworking saw blades, ventilation openings, pipes, etc, for hands-free operation.

·If the protractor doesn't work, please check the battery condiction or reset it. Additionally, Levels can be sensitive to changes in temperature, humidity, or exposure to extreme conditions. These factors can impact the materials and mechanisms within the level, causing them to expand, contract, or deteriorate over time. This can result in decreased accuracy or malfunctioning of the level.