Nautical Antiques & Marine Art at Land and Sea Collection™ Dive Helmets, Ship Models, Sextants

Navy MK I Quintatnt - Sextant Presentaton Grade Ca 1916

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This Elegant Instrument Has Been Sold. Thank you!
 
U.S. NAVY MK I QUINTANT/SEXTANT
WORLD WAR ONE ERA

Presentation Quality!
 
 
Presented is a World War One instrument made by  Brandis & Sons, Inc., for the U.S. Navy. The Brandis serial number 3331, is stamped at the forward edge of the engraved silver insert on the arc, and U.S. Navy and the Naval Observatory cartouche and number 1421 signifying that it was tested and passed for use, is engraved by the hand at the center of the arc.The arc reads to 185 differing from most quintants that traditionally read to 144. This design has some common features carried forward to the Navy MK II of World War Two which uses the same style and size horizon mirror carrier, index mirror holder and the adjustable rising piece that allows the telescopes to be moved towards and away from the frame. Its compact size and light weight are attractive features. See: http://landandseacollection.com/id718.html  The design is for hydrographic survey and marine astro-navigation.

It has two telescopes and a sighting tube for use with terrestrial objects. The longer scope is of high power which we estimate at 6 to 8 power, and displays an inverted image. It is to be used for astronomical observations and collimation. The lower powered scope, which likely is 3 1/2 power, displays the image in an erect position and is best for general all around use.

The adjustable rising piece allows moving the telescope towards or away from the frame making the horizon more distinct under varying light conditions. The bronze arc has a Silver insert that is calibrated -5 to +185; with a vernier that reads from the right, from 0 to 20 arc seconds. The sextant has four index shades and three horizon shades.
This magnificent instrument will make a rare addition to an important collection or as a gift of importance recognizing achievement or some important occasion!
NOTE: A quintant has a range of arc of 144 compared to a sextant which reads to 120. This was helpful in measuring Lunar Distances, which was a means of determining longitude without a chronometer.

Horizon Mirror and three shades
Index Mirror and four shades
Endless tangent screw and vernier
Maker's mark on index arm
CONDITION: This quintant is in exceptionally fine condition, and has been carefully polished and lacquered. The index mirror has some blackening at its outer perimeter, but not in the viewing surface which is clear and sharp. The horizon mirror is in very good condition. Both sets of shades (filters) are perfect. There is a mirror adjustment tool, and screw driver which were not photographed.

THE CASE: The instrument is housed in a tongue and groove wood case with the normal marks of use and age, but otherwise is in good, strong condition. There is some staining in the lids under section. No instrument certificate remains. Some small pieces of balsa wood were later added as spacers and hold down devices.
 
 
Housed in a sturdy wood case with original finish
 
BRANDIS HISTORY IN BRIEF: Frederick Ernest Brandis (1845–1916) was born in Germany, came to the United States in 1858, worked for Stackpole & Brother for a few years, and opened his own instrument shop in 1871. The firm became F. Brandis & Co. in 1875, F. E. Brandis, Sons & Co. in 1890, and Brandis & Sons, Inc. in 1916. The Pioneer Instrument Company purchased control of the Brandis firm in 1922, with aviator Brice Goldsborough as one of its vice presidents. It in turn was acquired by the Bendix Aviation Corporation in 1928. The manufacture of Brandis instruments ceased in 1932. Ref: Charles E. Smart, The Makers of Surveying Instruments in America Since 1700 (Troy, N.Y., 1962), p. 14-15 with additions.
Instrument and accessories in their case

 

OUR QUALIFICATIONS: We are one of the few still selling navigation instruments that know anything about them. For purposes of judging whether Joel's opinion counts, he was the editor of the chapter on sextants of the 1977 Edition of "Bowditch", The American Practical Navigator, NAVPUB 9; a member of the U.S. Naval Academy Navigation Symposium, 1975 -1978; the author of a book on marine sextants, Cornell Maritime Press,1975, and the founding president of Nautech Maritime Corporation which partnered with Tamaya of Japan in the introduction of their sextants and the famous NC-2 navigation computer, in the U.S. market. Joel is also a retired Master Upon Oceans, and held a U.S. Navy "D" Qualification as a Senior Skipper - Oceans. From 1995 through 2000, he served as a Varsity Offshore Sailing Team coach at the U.S. Naval Academy.

BRANDIS U.S. NAVY BRASS FRAME QUINTANT SPECIFICATIONS:
QUINTANT / SEXTANT:
Telescope 3.5 power
Collimation scope 6 power
Sighting tube 0
Two filters for ocular lenses
Length of index arm 7 7/8"
Radius of Arc 9 1/2"
Width of Arc 9 1/2“"
Index Mirror 44 mm x 34 mm
Horizon Mirror 23 mm x 27 mm
One pick
One screw driver

SEXTANT WEIGHT
 2 lbs 11 oz  IN CASE 7 lbs 2 oz
CASE 9 1/2" x 9 3/4" L x 5 1/4" W

FLAT RATE SHIPPING
to 48 contiguous States $30.00

OUR UNCONDITIONAL NO NONSENSE GUARANTEE:
If not completely satisfied with your purchase it may be returned within five days of receipt in its original packaging if without damage. Return items must be insured for their full value. Only a prior email authorization from us for the return is required. Shipping charges are included in this offer if an error is due to our fault within the Continental United States.

International buyers welcome, but inquire first. We have satisfied customers in Argentina, Australia, Austria, Belgium, Bermuda, British Virgin Islands, Canada, Chile, China, Czech Republic, Democratic Republic of Congo, Denmark, Estonia, England, France, Germany, Greece, Holland, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Japan, Kuwait, Latvia, Luxembourg, Malaysia, Martinique, Mexico, New Zealand, Nigeria, Norway, Nova Scotia, Panama, Philippines, Poland, Portugal, Puerto Rico, Romania, Russia, Saudi Arabia, Scotland, Singapore, South Africa, Spain, St. Maarten, Sweden, Switzerland, Thailand, Turkey, United Arab Emirates, USVI and the Eastern Caribbean.

ACCEPTED FORMS OF PAYMENT are Bank wire transfer, cashier's check, money order, or personal check in which case the item will be held until cleared. No credit cards or PayPal accepted on this item.


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