"The SOLA GO! Smart Digital Magnetic Pocket Level from SOLA combines the functions of a spirit level, an inclinometer and a protractor in a single device. Equipped with a backlit display and a magnetic base with a V-groove, this compact level has versatile applications. The GO! smart's Bluetooth interface means that it can be used together with the free SOLA Measures app, giving you access to useful additional functions. The GO! smart measures gradients and angles with maximum precision. The measured values can be displayed in °, %, mm/m and in/ft. The ‘Hold' function enables you to ‘freeze' the current measured values in the display, while the ‘Inc' function enables angles to be transferred easily. Measurement tolerance 0.05° at 0° and 90°, 0.2° between 1° and 89°. Comes with belt clip, 1-AA battery and belt pouch.El SOLA GO!