The Imex 012-EL60 LCD screen means easy to read measurements with a back light option for greater visibility The Imex 600mm Digital spirit Level has a self calibration function feature so that you can be sure of perfect levelling. If you ever drop the tool or are concerned about the accuracy then you can follow the simple instructions to re calibrate. You do not need a level surface to do this, just a flat one. The 012-EL60 is a highly accurate digital spirit level that measures to the nearest 0.1mm/m at level and plumb. Contains a horizontal, vertical and digital vial. Buzzer sound alert at 0°, 45° and 90°. LCD screen features 360° readout and the display flips to an upside down position for easier reading. Measures in degrees, percentage and mm/m. Supplied with a water-resistant bag. Features: LCD screen means easy to read measurements, this also has a back light option for greater visibility 360° readout - flips in upside-down position. Functional in all positions HOLD function - make it easy to use even when you need to confirm the angle of the roof pitch or curb. Just place the unit on the rafter and press hold and this will save the reading for you MODE function changes reading between degree/percentage/in-ft/mm-m Extra large buttons so is asy to use when wearing work gloves Siliconised buttons to prevent dirt clinging to them Beeps when horizontal and vertical Vertical vial mirror for greater visability Accurate to 0.1mm/m at Level Plumb Accurate to 0.2mm/m at all Other Angles Backlit LCD Display 360° Display Readout Horizontal Vertical Vials Units Displayed as °, %, mm/m & in/ft Recalibration Function Audible Signal at 0°, 45° 90° Comes With:  Padded bag 9V battery Users manual Specification: Part number: 012-EL60 Length: 600mm Number of vials: 2