Antique Sextant: Highly Coveted Nautical Artifacts

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Antique Sextant
Highly Coveted Nautical Artifacts

FIND ANTIQUE SEXTANTS FOR SALE

An antique sextant is a wonderful maritime collectible to behold. Its intricate beauty underscores the fact that, for all our modern technology, the simple ingenuity of tools invented centuries ago still works fine on the sea. Indeed, sextants still have advantages over modern devices that rely on electricity or other accoutrements to work properly.

Antique sextant technology was perfected after the invention of the octant in the 1730s. An octant has an arc of 1/8 of a circle, or 45°; a sextant’s arc is 1/6 of a circle (60°). These proved the most popular of the various instruments that would eventually be devised. (There were octants, quintants, and quadrants, each with a different arc.)

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These days, anyone looking for a unique decorative element for a nautical-themed space can use a great sextant. Collectors of maritime antiques and those with the sea in their heart (or in their lives) will love browsing the one-of-a-kind antique sextant sales listings online. The pieces are undeniably beautiful, each and every one.

How an Antique Sextant Works

The purpose of the antique sextant was to measure the apparent distance of an object, often a celestial object like the sun or other star, above the horizon. This was done by pointing the instrument in the general direction of the horizon and sliding a moveable piece down. The user had to line up the object in question in the bifurcated-view scope. Then the sextant was tilted back and forth to make sure it was in the center. Finally it was just a matter of reading the number where the moveable piece had been stopped along the arc.

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By taking a measurement of the sun at noon, a vessel’s latitudinal position could be ascertained. By comparing two objects of known location, the boat’s position could be triangulated from the readings of the sextant. Basic and practical, the sextant is still used as a backup tool for navigation on boats worldwide. A nice illustrated guide to using a sextant can be found on Wikihow.

See also: Vintage and Rare Antique Compasses

An antique sextant will generally be of the half-horizon or “traditional” type. These divide the view in the telescope in half using two mirrors. The horizon shows on one side, the object being spotted on the other, similar to a split-screen TV broadcast. Whole-horizon sextants show the entire horizon but are usually thought of as less versatile.

Antique Sextants Today

A collector may buy an antique sextant for its value as a beautiful piece of rare vintage art rather than a tool for navigation. This is due to several factors, not the least of which is that a sextant is a very delicate instrument. Any slight bend in the arc can cause it to be unreliable. Modern mariners guard their sextants like possessive hawks, keeping them from harm and from children. Great care must be taken even when removing sextants from their cases.

Browse 146 current Antique sextants for sale offers here

Antique sextants’ appeal is due to the classic workmanship and the specific history of each piece. It’s hard to find a bad one for sale, and the relatively low price of antique sextants makes them a great investment, no matter what your purpose for acquiring one may be. 

Antique sextants for sale

Currently showing our favorite 146 sales from eBay. Click for shipping details and money-back guarantee info. Antique sextants listings are chosen using MegaMinistore's original custom technology. We show you only the latest and best sales from safe, trusted sellers. Offers are updated and refreshed every day.

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Showing 11 - 20 of 146

TAMAYA MS-633 MICROMETER MARINE SEXTANT NAUTICAL NAVIGATIONAL INSTRUMENT #5

Seller: marine_shop7 ★★★★★★★★★★ 99.6% (2,098 ratings)
Location: India

$699.00 or best offer

Buy It Now Price

TAMAYA & CO LTD MICROMETER MARINE SEXTANT NAUTICAL NAVIGATIONAL INSTRUMENT

Seller: marine_shop7 ★★★★★★★★★★ 99.6% (2,098 ratings)
Location: India

$699.00 or best offer

Buy It Now Price

VEB Freiberger 890015 Trommel Sextant Marine Navigational Instrument

Seller: marine.vintage ★★★★★★★★★★ 98.7% (1,361 ratings)
Location: India

$450.00 or best offer

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TAMAYA MICROMETER MARINE SEXTANT NAUTICAL NAVIGATIONAL INSTRUMENT

Seller: son_goku59
Location: Japan

$489.90

Buy It Now Price

1953 Cassens & Plath Micrometer Sextant,​ Hamburg,​ W/Box,​ Keys & Certificate

Seller: marchandmichou ★★★★★★★★★★ 100% (919 ratings)
Location: United States

30% OFF
$947.44
$663.21

Limited-time deal. Buy It Now Price

Vtg C.PLATH MICROMETER SEXTANT May 7 1965 Hamburg Germany Serial Nbr 46822 NICE!

Seller: wulb85 ★★★★★★★★★★ 99.1% (2,599 ratings)
Location: United States

15% OFF
$850.00
$722.50 or best offer

Limited-time deal. Buy It Now Price

9"Nautical Tamaya Navigation Sextant Black Look Marine Beautiful Sextant

Seller: homyz_01 ★★★★★★★★★★ 91.3% (23 ratings)
Location: India

10% OFF
$444.00
$399.60 or best offer

Limited-time deal. Buy It Now Price

😲Rare Russian USSR Sextant NO N83629 - Vintage Nautical Navigation Instrument

Seller: skippersuppliers ★★★★★★★★★★ 100% (30 ratings)
Location: India

8% OFF
$699.00
$643.08 or best offer

Limited-time deal. Buy It Now Price

RARE MEASUREALL TOKYO SEXTANT MC-4LV MADE IN JAPAN "FAST SHIP"

Seller: skippersuppliers ★★★★★★★★★★ 100% (30 ratings)
Location: India

8% OFF
$689.00
$633.88 or best offer

Limited-time deal. Buy It Now Price

9" Vintage Nautical Tamaya Sextant Navigation Working Marine Black Set Of 5 Pcs

Seller: brassantique-plaza-01 ★★★★★★★★★★ 97.3% (334 ratings)
Location: India

7% OFF
$499.00
$464.07 or best offer

Limited-time deal. Buy It Now Price

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11 - 20 of 146

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