www.antik.it/Nautical-antiques/7433-Antique-Sextant/
Antik
e-Shop
All categories/Nautical antiques/Code 7433 Antique Sextant
All categories/Nautical antiques/Code 7433 Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Gift box
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Nautical antiques/7433-Antique Sextant
Gift box
Nautical antiques/7433-Gift box

Out of stock

used

1668875343Code 7433 Antique SextantMid 19th century brass English sextant signed Marshall London , instrument complete with three telescopes, one of which is long, and a filter and it is in its original mahogany box with brass hinges, latches and handle. Brass frame with engraved silver goniometric scale embedded in the arch, with scale from 0° to + 150°, adjustable vernier with reading vernier, wood handle, four colored glasses for the fixed mirror and three for the mobile one. Box size 26x24 h 13 cm - 10.2x9.4 h 5.1 inches.

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.

free gift box

free gift boxfree gift boxfree gift boxfree gift box

FAQ

e-Shop

Nautical antiques

Code 7433 Antique Sextant

2e-Shop1Nautical-antiquesCode 7433 Antique Sextant
Where we are
Antik Arte & Scienza sas di Daniela Giorgi - via S. Giovanni sul Muro 10 20121 Milan (MI) Italy - +39 0286461448 - info@antik.it - www.antik.it - Monday-Saturday: 10am-7pm