Item Type: Digital Protractor Specification: 0-200mm / 8 inches Measuring Range: 0-360 Degree Accuracy: 0.3 Resolution: 0.05 Battery: 3V CR2032(not include) Battery Life: About 1 year Operation: On/Off/Reset: Power switch button and reset button; Press this button to turn on the power; Short press this button to reset; Long press this button to turn off the power; Hold: Press the (Hold) button, "H" will appear in the upper right corner to save data and return to measurement mode again. 1Possess digital display panel, the digital display measuring angle value is clear and intuitive 2Come with a locking knob designs, convenient for locking angle at any position 3The product have accurate battery compartment designs, the battery is not easy to eject 4The protractor ruler body is made of high-quality plastic, which is sturdy and durable 5Suitable for construction, workshop, woodworking, home decoration and other fieldsRandom shipment of new and old models.1 x Digital Protractor