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Antique compasses/3841-Sestrel compass
Antique compasses/3841-Sestrel compass
Antique compasses/3841-Sestrel compass
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Antique compasses/3841-Sestrel compass
Antique compasses/3841-Sestrel compass
Antique compasses/3841-Sestrel compass
Antique compasses/3841-Sestrel compass
Antique compasses/3841-Sestrel compass
Antique compasses/3841-Sestrel compass
Gift box
Antique compasses/3841-Gift box

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10122013155410734Code 3841 Sestrel compassRare antique magnetic survey compass, signed Henry Browne & Son Ltd Sestrel Made in England, end XIX century. Height cm 23 - inches 9, diameter of compass cm 10.5 - inches 4.13. Very good condition.

It’s a small antique brass compass, typically used for pleasure sailing navigation, that is for less subject to magnetic deviation boats. Moreover this compass can be kept in the hand and so it can stay away from magnetic fields of boats. It has a sight system and an eight winds graduated compass card to measure the angle between sight and North indicated by magnetic needle. This angle is the azimuth of bearing. This compass can be subject just to declination, so a bearing using this compass is a magnetic bearing. This compass has a brass cylindrical box, named mortar; on its bottom a hard metal stem is fixed, named sensitive element; on this element it is leaned a compass card, appropriately fixed: the zero has to coincide with magnetic polarity. To limit friction, mortar is filled with a low freezing point liquid, that has to quench rapidly swings, and it is closed with a strong glass protection.

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Code 3841 Sestrel compass

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