Antique Brass Executive Desk Gimbal Compass 8" This Antique Brass Executive Gimbal Compass 8" is a solid brass reproduction of an antique sailing ship cabin compass. The compass is mounted on a 360-degree double-gimbaled ring system on a heavy wooded base. The gimbal ring design allows the compass to remain level regardless of the angle of the base. The base is wood so it can rest sturdy on any desk. View photos for further details.