The ultimate forestry instrument, the Omni-Scope inclinometer measures angles in degrees, percent grade and the 66 foot forestry chain. The lightweight aluminum housing lends years of field reliability, and the precision pendulum gives fast and accurate readings whether you"re gauging the height of a tree, measuring avalanche danger, or judging the pitch of a cave. Illuminated readout light piping gives a clear bright readout even in lowlight. Made in the U.S.A with U-PROOF Warranty; Buy It, Try It, Bust It, Return It - No Questions.