Get a quick fix, day or night, with this reliable Hand Bearing Compass. A perfect companion for sailors and small boat operators, this durable hockey puck style compass is easy-to-read and accurate to within 1 °. A heading can be determined in one of two ways: by looking straight down the compass and reading the angle shown with the magnifying lens, or by holding the compass near the eye and reading down the line of sight. The contrasting black and red numbers on the compass card make it quick, clear, and easy-to-read. It features a two-colored photo luminescent card that's numbered every 5 degrees and provides battery free illumination. Keep it close by with the neck/wrist lanyard. Length: 3.2 in (8.13 cm); Width: 3.2 in (8.13 cm); Height: 1.3 in (3.3 cm), Weight: 0.3 lb (3.3 cm)