MD69BC Bearing Circle Sight For Bearing Compass Repeaters

MD69BC Bearing Circle Sight for Bearing Compass Repeaters

The MD69BC is a classic vane-type Bearing Circle that enables observers to accurately take compass bearings by aligning the dual sighting vanes with a distant target.

OVERVIEW

The MD69BC is a traditional vane-style Bearing Circle designed for precise compass bearing measurement. Observers can obtain bearings by aligning two sighting vanes with an object in the distance. The front vane features a peep sight, while the rear vane is equipped with a vertical sighting wire. A horizontal wire connecting both vanes allows for easy reading of bearings from the Compass Repeater card.

Additionally, a reflector vane located behind the rear vane facilitates the observation of the azimuth of luminous celestial bodies (such as stars and planets) at different altitudes by capturing their reflection in a black mirror. When a celestial body is centered, its reflection will be visible behind the vertical wire of the rear vane. The MD69BC includes a removable shadow pin that indicates the sun’s azimuth based on the direction of the shadow cast.

This instrument is finished in Jet Black (RAL9005) with a fine-texture powder coat, ensuring it complements other marine navigation equipment. It is packaged in a wooden instrument case for protection and convenience.

Marine Data’s MD69BC Bearing Circle is versatile, user-friendly, and easy to maintain.

FEATURES

• Classic vane-type Bearing Circle design
• Supplied with a removable shadow pin, folding vanes, and reflecting mirror
• Constructed from non-magnetic naval brass for durability

APPLICATIONS

• Ideal for taking accurate terrestrial bearings of distant objects
• Specifically designed for use with the Marine Data MD69BR Bearing Repeater Compass