-2° graduation lines and large numerals at every 20° mark -Clear base plate makes it easy to read a map and set bearings -To get a precise needle match, just match the red needle to the red in the capsule -Declination correction scale allows youto make quick adjustments of map bearings to field headings -Sure-grip dial and ergonomically-contoured base plate rests comfortably in your hand -Inch and millimeter scales for mapping and plotting -Rotating capsule helps you lock in bearings -Lanyard hole makes it easy to insert a cord for convenient carrying -Map Distance Wheel measuring system allows you to plot any curving trail distance from a map -Exactly eight inches in circumference -Lets you take a continuous measurement of the length of any trail up to eight map inches long -Space-saving system gives you quick and accurate distance measuring when used with the map legend -Map Distance Wheel is made in the U.S.A.
