*Heavy duty extruded aluminium frame.
*Three sizes level are available from 865mm to 1200mm, from 1315mm to 2000mm, from 2000mm to 3472mm
*3 professional solid vials(90degress, 180degress, 90degrees), the accuracy is 0.5mm/m
*Take "out-of-plumb" measurements quick an accurately.
*Built-in out of plumb measuring disk with scale.
*Combination fractional and metric ruler.