The Stabila LD 320 Laser Distancer is a compact measuring device with easy to operate measuring function. Including length, area, volume, tracking (continuous measurement), Pythagoras with 2 or 3 measuring points and min/max tracking. With a large, backlit screen and large readout making it easy to read in any environment. Its impact-resistant housing with shock absorbing soft grip casing provide excellent durability for the worksite. Provides all the measuring technology that most craftsmen need on the building site. Fulfils the international standard ISO 16331-1 certification for repeatable accuracy. Specification Accuracy & plusmn1.5mm Operating Range 0.05-60m Power 2 x AAA batteries (supplied) Laser Class 2 Laser Wavelength 635nm