MD69BC Bearing Circle

MD69BC BEARING CIRCLE

MODEL NUMBER: MD69BC

The MD69BC from MARINE DATA is a traditional vane type Bearing Circle. It allows an observer to take a bearing of a distant object by aligning the two sighting vanes with the object. The near vane contains a peep sight while the far vane contains a vertical sighting wire. A diametric horizontal wire from the near vane to the far vane enables the observer to read the bearing from the Compass Repeater card.

SKU: F069052 Category: Tag:

Product Description

OVERVIEW

The MD69BC from MARINE DATA is a traditional vane type Bearing Circle. It allows an observer to take a bearing of a distant object by aligning the two sighting vanes with the object. The near vane contains a peep sight while the far vane contains a vertical sighting wire. A diametric horizontal wire from the near vane to the far vane enables the observer to read the bearing from the Compass Repeater card.

A reflector vane positioned behind the far vane allows the observer to observe azimuths of luminous celestial bodies (stars and planets) at various altitudes by picking up their reflection in the black mirror. When the body is observed, its reflection appears behind the vertical wire in the far vane. The MD69BC is supplied with a removable shadow pin which indicates the azimuth of the sun by the direction of its shadow.

CAUTION: This instrument is NOT suitable for taking direct azimuth sightings of the sun. For this we recommend the MARINE DATA MD69AZI Azimuth Sight which has a sun filter.

The instrument is finished in a semi-gloss black paint to complement other external marine navigation equipment and is supplied in a wooden instrument box.

The MD69BC Bearing Circle from MARINE DATA: flexible in application, easy to use and simple to maintain.

SPECIAL FEATURES

  • Fits Standard 9.7 inch Diameter Compass and Compass Repeaters
  • Folding Vanes
  • Removable Shadow Pin

APPLICATIONS

  • For taking terrestrial and limited celestial bearings

RELATED PRODUCTS & SYSTEMS

  • MD69AZI – Azimuth Sight
  • MD60A2K – Telescopic Alidade
  • MD69BR – Bearing Repeater

Product Specifications

PHYSICAL

  • Weight: 1.0 kg
  • Dimensions: OD Ø 254 mm; H 143 mm (with shadow pin)
  • Mounting: Fits the MD69BR Bearing Repeater; bezel Ø 9.7 inch (246.4 mm)
  • Construction: Marine Grade Naval Brass
  • Finish: RAL9005 satin black paint

ENVIRONMENTAL

  • IP rating: N/A
  • Operating temp: -10°C to +70°C
  • Compass: Safe distance 50 cm

ADDITIONAL INFORMATION

  • Supplied: Wooden Instrument Box
  • Supplied: Shadow Pin (removable)

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