Strong I-profile made from aluminium measuring 50x23 mm and weighing 640 g/m. Crush-proof tubular vials that are highly transparent and durable. The fully adjustable end vial can be turned 90 degrees for setting or checking slopes.
- The radius of the vial is 200 mm, giving a sensitivity of 10 mm/m.
- Tolerance in normal position is ±1.0 mm/m.
- The liquid in the vial is a low viscosity coloured oil mixture that gives the bubble optimal freedom of 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.