The STANLEY SLM100 Laser Distance Measure is suitable for a wide range of professional measuring applications. It is easy-to-use, thanks to its two-button operation: one to activate the device and take measurements, and a cog button to select different functions. Equipped with a generously-sized screen that displays two rows of measurements. Black characters on a white background make it easy to read measurements, even in bright conditions.  Features: Functions: distance, area, volume, and indirect height measurements via Pythagoras calculations Black characters on white background ensures full visibility Measurements can be taken from the top or base of unit Large screen size, shows two rows of measurements Power: 2 x AAA batteries (supplied) Specifications: Dimensions: H:2.5 x W:11.7 x D:20.0 cm Colour: Multi Guarantee:1 year Material: Plastic Model Number: INT077100