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This Fine Instrument Has Been Sold. Thank you!
U.S. NAVY MK III SEXTANT
~ C. Plath Pedigree ~
Presented is our second
opportunity in the last few months to offer an outstanding, near "Collector Quality" U.S. Navy MK III sextant. This one is
Serial No. 1771 and was made by Scientific Instruments of Milwaukee, WI, the Navy's last sextant contractor thus becoming
a part of celestial navigation history. The sextant comes complete with a sighting ring, brush, an adjustment wrench
and a spare index mirror, all housed in a Butternut wood case with wood handle which adds an elegant touch. The matching
certificate is dated 7/10/85.
SOME BACKGROUND: At the time the design of this
sextant was adopted around 1975, I was a member of the Navy Department's Navigation Symposium Board, and remember the criteria
that was established for as new sextant design which was the same as the already existing features found in sextants in
the civilian maritime industry. The Navy's design incorporating these features was late in coming since the civilian
sextants were in use before WW II and were far advanced from the ubiquitous Navy's standby during this period, the Navy
Listed are the MK III's design features:
Large size index mirror
Large size horizon mirror
Vernier reading to 6 seconds
Handle for ergonomic fit
Wide angle telescope
Non adjustable instrument error of less than 20 arc seconds
Military high impact absorbent case
Except for the handle and case, the Tamaya MS 733 and the C. Plath
sextants met these criteria as did a few others, but there was strong feelings in government to "Buy American" in contrast
to today's World Economy. Consequently, M. Low of New York City was selected for the MK III program, Little is known
of this company other than they were in New York and in the instrument business. The sextants were made under license from
C. Plath, of Hamburg, Germany who may have provided the tooling. C. Plath aficionados take note, the design is clearly the
same as the C. Plath Classic sextant down to the last detail other than its ergonomic handle and large size high impact resistant
case. This pedigree is noted on page 119 of the book by Friedrich Jerchow,"From Sextant to Satellite Navigation,
(1837-1987) 150 years C. Plath".
After M. Low disappeared from the scene, Scientific Instruments, of Milwaukee,
WI. became the sole provider, but they made fewer and fewer sextants as Satellite Navigation (Sat Nav), the newly accepted
electronic system, became more prevalent until GPS succeeded it. SIC stayed in business until 2008 when they decided to close
their doors. In one of our last conversations with the owners they told us sextants were still being made in very small
numbers for newly built U.S. Navy ships at a price of $4300.00.
CONDITION: The sextant shows light evidence of service of sea, but not much. The interior of the case is in the best shape
that we have seen, and there are no wounds from the sextant's legs missing their holes that were prevalent
in the others we've seen. All its machinery works well. Both fitted mirrors show as NEW. The stainless screws and clamps are
bright and shiny, but there is some minor roughness to the black finish. Even so, it can be considered as near new in all
respects. It comes with an extra index mirror. The numbers match on the certificate. The lighting works. The newly
refinished Butternut case shows some minor scars of age such as a few scratches on its top and bottom. The index error is
negligible, and there is a touch of side error which is a good thing. The last certificate is included. No locks are fitted
to this Navy style case.
STAR RANKING: This sextant and case rates
Vernier with 10 indents or each
Large Butternut wood case with hi impact interior
This is fine sextant is in perfect condition and is backed by our guarantee of satisfaction. It requires
someone who can appreciate the fine points of a sextant, and is willing to pay an appropriate price for this level of quality
OUR QUALIFICATIONS: We are one of the few company's 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 Board, 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.
U.S. NAVY MK III SPECIFICATIONS:
Measuring Range: -5 to 125 degrees
Accuracy: Tested to +/- 20 arc seconds
Telescope: 2 x 40 Coated optics
Frame: Aluminum with black enamel paint and white
Micrometer Drum and Vernier Scale: reads to 6 arc seconds
Index Mirror: 57 x 42 mm with spare
Horizon Mirror: 57mm diameter with spare
3 for index mirror
for horizon mirror
Weight sextant: 2.5 lbs, Weight case in case 12.5 lbs.
Only three times before have
we offered a Navy MK III sextant of this quality. It will be equally home at sea or in a collection of only the finest.
FLAT RATE SHIPPING to 48 contiguous
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 within the continental United States if an error is due to our fault.
International buyers welcome, but inquire
first. We have satisfied customers in Argentina, Australia, Austria, Belgium, Bermuda,
British Virgin Islands, Canada, Chile, Republic of 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.
FORMS OF PAYMENT are Bank wire transfer, cashier's check, or personal check in which case the item will be held until
cleared. Our prices are quoted net to seller, but credit cards may be accepted through PayPal for verified members
by special arrangement.
Copyright 2013 by Land And Sea Collection™, All