Temperature range: ~34°F to 45°F

They are often used in conjunction with two engines such as a main engine and a generator to take advantage of the surplus heat provided by two separate sources

Employing hybrid HF technology

providing more than 13 hours of use on a single charge (5/5/90 duty cycle)

Maximum flexibility of installation

Ritchie - Flush-Mount Compass Globemaster Series - FB-500 Above $500 Temperature range: ~34°F to 45°FGlobe Master compasses utilize spherical shaped bowls and a non coloring damping fluid for maximum card stability. A roller diaphragm expansion chamber prevents bubbles and bowl pressure caused by temperature fluctuation. Includes built in compensators, jeweled movement and 12V green night lighting. Cards have 5 graduations. BIC" INDICATES BUILT IN COMPENSATORS. Black finish with a 7 1 2" O. D. flange. In the box Power Damp Dial