An extra robust aluminium level with highly transparent & durable unbreakable block vials. The horizontal luminous vial magnifies at 30%. Impact absorbing secure end guards.
Sensitivity of 10 mm/m & a tolerance in normal position of ± 0.5 mm/m (inverted ± 0.5 mm/m). The vial fluid is a low viscosity, coloured oil mixture that gives the bubble the best possible conditions for movement & is resistant to UV light & temperature fluctuations. The bubble is also not affected by static electricity as the fluid is anti-static.