Square Frame Level with Adjustable Vial, Base Length/Accuracy: 150/2 mm

Sturdy frame of high quality special casting, hammer finish. 3 sides Vee ground, 1 side flat. One longitudinal and one transverse vial each of glass. The sensitivity scale value of the longitudinal vial is specified on the square. Accuracy grade 1 has insulated handles on the housing and protective glass cover over the vials. Adjustment of the longitudinal vial: An adjustment screw allows the longitudinal vial to be reset to the 0 position easily and without play, with no need for disassembly. Application: For aligning horizontal and vertical faces, shafts etc. and for accurate alignment at a 90 Deg angle. Standard: DIN 877 Accuracy: 1 = with very high sensitivity longitudinal vial 0.02 mm/m. 2 = with high sensitivity longitudinal vial 0.1 mm/m.