This series of spirit levels are machine milled on two sides to ensure accuracy & have improved vial views for ease of use. The large centre vial is bridged to allow a continuous line to be marked on the work piece. The dual bi-material grips are ideal for carrying and vertical leveling, and the levels have shock absorbing end caps for longer life. FatMax levels have an accuracy of ±0.5mm/M on one face & ± 0.7mm/M on the other.