This comprehensive professional laser measuring device has many advanced features. The Stabila LD520 Laser Measurer has a digital target locator using a built-in camera with cross hairs for exact targeting even in strong sunlight. The 61mm colour display with high resolution gives pin-sharp images. The cross hair sight helps you aim at the target point. It has a four times zoom to enlarge or reduce the view. This is very useful in strong sunshine and over long distances, as you no longer have to look for a little red laser point. You can then measure the distance precisely. The display brightness is adjustable to suit ambient light conditions. The light sensor automatically controls the display lighting, helping to conserve battery life. Integrated Bluetooth® Smart (4.0) offers simple data exchange, e.g. with an iPhone or iPad. The free Stabila Measures app lets you transfer measurements wirelessly to a smartphone or tablet, directly onto photos or drawings of the site. The LD520 has a 360° inclination sensor for flexible measurement from any position (displays 180°). The sensor allows you to make absolute horizontal measurements and is the basis for several new functions. The LD520 has a built-in calculator that enables you to multiply or divide measurements by fixed values (e.g. hourly rates or material costs). This provides usable calculated figures, to make meaningful quotations on site. The LD520 has robust, impact-resistant housing, with a shock-absorbing soft-grip cover and a 1/4" X 20 tripod mount. It has IP54 class protection against rain and dust.