The Commodore HB has no equal in a desktop compass. Made of the highest quality brass, copper, and bronze in the U.S.A., it is a full-size example of the traditional box compass in use during the 1800s and early 1900s. In fact, this model has been in continuous production, with few changes, since 1907. Because the compass is liquid-filled, the card is dampened and extremely steady. The traditional 32-point card has an outer ring graduated in degrees. Accuracy is assured by a strong sensor magnet, and sensitivity by the use of a sapphire jewel and hardened steel pivot.