Spirit Level Aluminium SM Pack The pack contains Spirit Level Aluminium SM 60, SM 120 and SM 200. Aluminium profile measuring 49x21 mm and weighing 520 g/m. Crush-proof block vials that are highly transparent and durable. The radius of the vial is 200 mm, giving a sensitivity of 10 mm/m. Tolerance in normal position is +-0.
75 mm/m, upside down +-1. 0 mm/m. The liquid in the vial is a low viscosity coloured oil mixture that gives the bubble optimal freedomof movement. Highly resistant to ultraviolet light and temperature fluctuations. The anti-static properties of the liquid means that the bubble is not affected by static electricity.
