HomeAbout UsContact UsSend QueryEmail Us
Onyx Nautical
Compass
Compass
Compass
Compass
Compass
Sextants
Telescpoes
Clocks
Miscellaneous
Sand Glass
Binoculars
Telegraphs
Theodolite
Magnifiers



About Sextants
Sextant is a name derived from Latin word sex that means six. Sextant as a product is named so because of the celebrated arc of 60 degrees (i.e. 1/6th of a circle). It is an optical instrument used in navigation. It is used to measure the elevation of the celestial bodies above the horizon from the observer's position. With the angle of elevation of a known star and the exact time, the latitude position of the observer can be calculated.

Email Us to know more about our products
Sextants
In earlier times, marine sextants had a fixed telescope leveled on the horizon and a radial arm is moved against an arc scaled in degrees. The radial arm is adjusted to get the reflection, of a known star, from index mirror and then off the horizon mirror down the telescope until it lines up with the horizon. The position of the radial arm on the scale gives the stars elevation. The nautical sextant range includes: slow motion nautical sextant, octants, slow motion nautical sextants and round dubble telescope nautical.

In modern sextants, the light ray from the celestial body is reflected in two mirrors (in series) one of which is adjustable and the other is half silvered. By rotating one mirror and its attached index bar, the image of the body is brought down to the horizon. The rotation measures the altitude on the limb.

Slow Motion Nautical Sextant, Code- 59, Onyx Nauticals Nauticals Sextant, Code -338, Onyx Nauticals
Slow Motion Nautical Sextant
Nautical Sextant With Compass
Dimensions : 10 cms
Weight : 350 gms
Product Code : OI - 201
Made of brass and German silver, this sextant has a telescope, filter glass, reading glass and a brass handle. It functions same as a slow motion sextant.
Dimensions : 20 cms
Weight : 1.4 kg
Product Code : OI - 202
A good quality compass with one big telescope, two mirror glasses, six filter glasses and a wood brass handles. It is available in a variety of finishes.
» Send Query » Send Query


Slow Motion Nautical Sextant, Code- 406, Onyx Nauticals Round Double Telescopes Nauticals, Code -429, Onyx Nauticals
Slow Motion Nautical Sextant
Round Double Telescopes Nauticals
Dimensions : 10 cms
Weight : 350 gms
Product Code : OI - 203
Made of fine quality glass, it has six filter glass, one reading glass, two mirror glass and a telescope.
Dimensions : 15 × 6 cm
Weight : 800 gms
Product Code : OI - 204
Made of brass, it is a full round nautical sextant. It has two telescopes. It functions same as a slow motion sextant.
» Send Query » Send Query


Nautical Sextant, Code- 160, Onyx Nauticals Nauticals Sextant, Code -196], Onyx Nauticals
Small Nautical Sextant
Micrometer Nautical Sextant
Dimensions : 8 cms
Weight : 250 gms
Product Code : OI - 205
Used as common sextant, it has a reading glass, two mirror glasses and a big telescope.
Dimensions : 15 cms
Weight : 1kg
Product Code : OI - 206
Made of premium quality brass and German silver, it has six filter glass, two mirrors, one telescope and a reading glass. A micrometer drum and a wooden handle adds to its elegance.
» Send Query » Send Query