Lightweight, machined aluminum-alloy body features a compact, ergonomic design. Shock-resistant units offer precision accuracy (±1⁄4°) at almost any temperature (–22° to 140°F). The compass scale reads 0°–360° in 1⁄2° increments, with reciprocal scale for chart plotting. Clinometer scale reads in degrees (0°–90°–0° in 1° increments) or in percentages (0%–150%–0% in 1% increments). Built-in lanyard and camera tripod thread combine to provide convenience and versatility. Order No. 139558 for a declination adjustable Compass. Both models include nylon carrying case.