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Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
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Nautical antiques/6785-Vintage sextant
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Nautical antiques/6785-Vintage sextant
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Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Nautical antiques/6785-Vintage sextant
Gift box
Nautical antiques/6785-Gift box

Code 6785
EUR 1400.00
In stock

EUR 1400.00
In stock

used

1607079212Code 6785 Vintage sextantBrass sextant from the second half of the 19th century, placed in its original wooden box. Flap and vernier of engraved silver, handle of boxwood, 3 colored glasses for the fixed mirror and 4 for the mobile one, a telescope, a microscope for reading the vernier, graduated from 0 to 150 °, index and horizon mirror. Box size 25.65x28.2 h 13.5 cm - 10x11 h 5 inches. Excellent condition and fully functional, complete with custom-made support base.

In order to measure a height of a star (for example, the Sun), you have to set the instrument in a vertical plane and, looking through the sight device, to mark out the line of the horizon visible through the non-silvered half of the fixed mirror. Moving the alidade that is together with this mirror, make sure that the light rays coming from the star, and then reflected by the mobile mirror and by the silver half of the fixed mirror, be directed from the fixed mirror to the observer: if you look through the sight device, you see the image of the star, obtained for double reflection, coinciding with the line of the horizon. The height of the star is expressed by the angle whose value is read on the graduated scale. The filter is used when the star is the Sun.

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Code 6785 Vintage sextant

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