Compact, with no external moving parts and a combined sighting & angle-reading eyepiece, this Clinometer MK2 is the perfect measurement tool. A viewing window on the side allows a second person to check a reading and all of the angles are in degrees followed by a plus or minus to indicate an upward or downward slope. Age: 5 Years + Item size: 17 x 17 x 4 What's in the box 1 x Clinometer MK2