The Silva Clinometer is a popular clinometer for all types of vehicles. It has two scales, one ±35° and a fine tuning scale ± 5°. The Silva Clinometer is used for checking the heeling angle on sailing boats and for the power-trim check on powerboats. It is also a perfect working instrument for other applications, such as making sure that different vehicles and equipment sits “level” or keep the desired a angle. For angles up to ± 5°, read the top precise scale, for angles over ± 5°, use the lower scale for readings up to ±35°. Suitable for use in vehicles, e.g. for perfect parking of motorhomes and caravans or for estimating the slope inclination when off-road driving Can be screwed on using four holes or glued with the enclosed double adhesive tape. Fully Waterproof. 1x8x10 cm.