Inclinometers APK Inclinometer with adjustable measurement piston, graduated up to an inclination of 10%. Made from strong aluminium profile measuring 50x24 mm and weighing 740 g/m. Crush-proof block vials that are highly transparent and durable. Horizontal vial with a magnification lens and luminescent reflector. The radius of the vial is 200 mm, giving a sensitivity of 10 mm/m. Tolerance in normal position is ±0.5 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.