Some are labeled as Garmin but product is the same high quality.
Measures 100 mm x 80 mm. Fixing the Silva / Garmin Clinometer 131to your boat or machine couldn`t be easier as adhesive tape is supplied to secure it. If you prefer though you can attach it using screws as the clinometer has 4 pre-drilled holes, 1 in each corner. (Screws not supplied)
Made of tough ABS plastic.