The compass features three inclinometer systems: card inclinometer (+ 5o accuracy with 50 resolution), hinge inclinometer (+ 50 accuracy with 50 resolution), and graduated dial inclinometer (+10 accuracy with 10 resolution). The revolutionary body design is lightweight and rugged. The compass also features adjustable declination; professional field reference cards; magnified read out; a map magnifier; and USGS 1:24,000 feet mile, UTM and meter scales. Lanyard included. Accuracy : + 10 , Dimensions : 4.1 x 2.5 x 1.