the FletaDigital Angle Measurement rangeMeasuring range: 0~270, Measuring accuracy: 0.3, angle increase/decrease 0.1 when you open or close the angle (NOTE: This is not a digital level). Easy ReadingBacklight LCD screen displays the exact angle at once for easy reading and keeps its normal use in dark conditions. Data hold function helps users to note the angle effectively. Practical DesignMechanical lock (lock button) keeps the angle invariable in your measurement process; positioning hole design allows you to suspend the angle measurement. Functional9V 6F22 battery not included; Automatic shutdown in five minutes to extend battery life; With its horizontal and vertical spirit level, it can be used as a spirit level. ApplicationIt can also be used as a spirit level to quickly measure horizontal and vertical angles, intended for lineation for carpenters, as well as for measuring and setting exact angles. Features: - Easy-to-read LCD display shows the exact angle at once. - Positioning holes design.- Automatic shutdown after five minutes to extend battery life.- Backlight design: maintains its normal use in dark conditions.- Data storage function: help users to note the angle effectively.- With its horizontal and vertical spirit level, it can be used as a spirit level.- Mechanical lock (lock button): keep the angle invariable in the process of line or measure it..- HOLD button to lock the angle- Angle guide- Low power alarm.- Measuring range: 0 ~ 270 .- The angle value increases or decreases by 0.1 when you open or close the angle.- LED display on / off- 9 volt battery (not included)- Hole for hanging the digital angle level Specification: - Length: 10 inch / 25.5cm- Increase / decrease angle: 0.1 - Measuring range: 0 ~ 270- Measuring accuracy: 0.3- Working temperature: -10C ~ +50C CAUTION!!! 1. Do not move screws and components randomly. 2. Handle your angle indicator carefully, use constant force to rotate the rotating arm and do not use too much force. 3. Do not leave the backlight open for too long. 4. When the low power alarm icon appears on the screen, please change the batteries. Package Included: 1 * Digital Angle Finder