Laser Distance Meter with a measuring range of 0.05-100m<br> With or Without Water Level<br> 1.6″ LCD display<br> Pythagoras function for remote measuring of height or length<br> Addition / Subtraction calculation<br> Backlit display shows multiple readings<br> Audible alarm<br> Dust protected & splash proof to IP54 rating<br> Auto laser switch off after 30 sec’s<br> Auto Power Off after 30 sec’s no activity<br> Measuring distance: 0.05-100m<br> Accuracy: ±1.5mm / ±0.06in<br> Measurement units: m/in/ft<br> Laser Type: Red laser, 635nm, <1mW, Class II<br> Operating temperature: 0-40’C,(32-104’C)<br> Powered by 2 x AAA batteries(not included)<br>