1、Widely used in machinery manufacturing, automobile maintenance, healthcare industry, wood processing, instrument testing, home decoration, etc. 2、The digital protractor is designed with mono‑color LCD with backlight, friendly for the users, large LCD displays clear angles. 3、Digital protractor could be rechargeable.It is very convenient by using it, connecting the USB cable to the unit and a computer's USB port. 4、There are magnets on the underside and on all sides, the buzzer alarm can be set at a specified angle. The V‑groove design of the shell can be easily placed on corners and round pipes. 5、Can measure dual axis tilt angle, measuring range is dual axis ±40°, ±0.1° high accuracy , 0.02° high resolution. <div class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text">Item Type: Digital ProtractorMaterial: PlasticSize: Approx.70x70mm / 2.76x2.76in Product Model: DXL360 Built-in Battery: Rechargeable lithium ion battery 3.7VUser Interface: Backlight mono-color LCDCharger Interface: 5V 500mA Mini B type USB interfaceResolution: 0.02°Accuracy: ±0.1°Measuring Range: Dual axis ±40°Magnetic Base: Set on the four cornersPlug &amp; Voltage: US 100-240VHow to Use:1. POWER (in normal operation, this button is mainly used to switch the angle ruler)2. ZERO (press the button, the current angle will be set to zero)3. HOLD (after pressing this button, the LCD will lock the display of the angle when pressed; the [O] on the screen will flash, indicating that the current angle reading is locked)4. SET (press and hold for 3 seconds to enter the menu mode and set various parameters)<style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Digital Protractor1 x Data Cable1 x Plug1 x Instruction Manual