The PV Professional spirit level is an extra robust aluminium profile that measures 59 x 26mm and weighs around 880g/m and has unbreakable block vials with extremely high transparency and durability with the horizontal magnifying vial at +30 % with luminous reflector. Impact absorbing end guard and temperature-proof level attachments.

The vial radius is 200mm, which gives a sensitivity of 10mm/m and a tolerance in normal position ± 0.5mm/m, inverted ± 0.5mm/m. The vial fluid is a low viscosity, coloured oil mixture that gives the bubble the best possible conditions for movement and is resistant to ultraviolet light and temperature fluctuations. The bubble is also not affected by static electricity as the fluid is anti-static.