1. This product adopts high-strength aluminum alloy to the ruler body, which is durable.
2. This product uses a high-definition LCD screen with backlight function, so the backlight will automatically turn on during use. The backlight will automatically turn off after 30 seconds of nonuse, so this product can also be used normally in low-light and dark environments.
3. This product has the automatic shutdown function after three minutes of no response.
4. This product is mainly used in construction, woodworking, machine work, home DIY, etc.
ON/OFF/ZERO button: In the power-on state, short press has the function of reseting. Long press has the function of shutting down. In the shut-down state, short press has the function of turning on.
HOLD button: press shortly so as to lock and unlock.
MODE button: press shortly so as to switch between ° and ′.
1. Adjust the position of the main ruler and the auxiliary ruler to a measurement angle (any angle within the range of 0°~225°), press the "ON/OFF/ZERO" button short so as to reset the ruler.
2. Use the top surface of the main ruler and the bottom edge of the auxiliary ruler to measure another angle (0°-225°)
Horizontal and vertical measurement:
1. The measurement method of horizontal bubbles: A. Place the bottom surface of the ruler tightly on the surface of the measured object. If the bubble in the horizontal bubble in the corresponding direction stays between the marks on the surface of the horizontal bubble, then the surface will be horizontal or vertical.