This compact compass is ideal for small powerboats, canoes, kayaks and vehicles. The versatilebracket mounting system can be swiveled-down for flat surfaces or reversed for windshields and verticalsurfaces. It has built-in compensators and 12V night lighting. Mounting pad: 1-1/4" x 1-1/4". Apparent Card Dia.: 2" Card Type: Direct Read Mounting Style: Reversible bracket Case Material: Reinforced polymer Case Dimensions: 2-7/8" x 2-3/16" Lubberlines: Yes Clinometer: No Lighting: 12V Cover/Shield: No Warranty: Five years