メスシリンダー

　でも、巷にあふれているのは、インドあたりで作られている粗雑なリプロダクション（レプリカ）^＊１。所有する喜びを感じる六分儀を見つけるのは、結構大変です。ロンドンやパリの高級店に行けば、良い品がびっくるするようなお値段で売ってはいま
 
 

六分儀のメーカー

現在も六分儀を作成しているメーカー
 

Cassens & Plath
Bremerhaven, Germany
Horizon Ultra, Standard

Freiberger
Freiberg , Eastern Germany
Drum Sextant

Tamaya & Company Limited タマヤ計測システム株式会社
Tokyo, Japan
Spica, Jupiter, Venus (discontinued?)

Changzhou Celestaire Instrument Co
Changzhou, China
Astra IIIB

Davis Instruments Corp.
Hayward, California
Mark 25, Mark 15, Mark 3（プラスティック製）

１９００年以降に六分儀を製作していたが現在は作成していないメーカー
 

C. Plath
Hamburg, Germany
Navistar Classic, Navistar Traditional, Navistar Professional

J. Hicks
London, England
Box sextant (1900)

Cary
London, England
4" and 6" (1904)

G. W. Heath
London, England
Hezzanith (1909), 8" Explorer's Kit (1920)

Henry Hughes
London, England
Paget Angle Sextant (1900), Brass sextants (1920)

Kelvin & Hughes
London, England
Huson (1986?)

B. Cooke & Son, Ltd.
Hull, England
The Kingston (1986?)

Francis Barker & Son
Edenbridge, Kent, England
Small Craft Precision Sextant (1988)

East Berks Boat Co. (EBBCO)
Berkshire, England
Two plastic models (1986?)

Stanley
London, England
Nautical Sextant (1911)
(Replica sextants may still be made which are not suitable for navigation)

Fuji
Japan
Toyo Sokki (1900?)

Toizaki and Company
Shi Chiba-Ken, Japan
Junior

Asahi Optical
Tokyo, Japan
?

Keuffel & Esser
New York, New York
US Navy Sextant

Bausch & Lomb Optical, Co.
Rochester, New York
US Army A-8A (1942)

Agfa-Ansco
Binghamton, New York
US Army A-10 (1942)

Fairchild Camera and Instruments Corporation
New York, New York
US Army A-10A (1944)

Link Aviation Devices
Binghamton, New York
US Army A-12 (1941)

David White Co.
Milwaukee, Wisconsin
US Navy Mark II (1943)

Pioneer Instrument Company
Brooklyn, New York
US Navy Mark III (1937)

Scientific Instruments, Inc.
Milwaukee, Wisconsin
US Navy Mark III (1977)

Bendix Aviation, Pioneer Instrument Division
Bendix, New Jersey
US Navy Mark IV (1941)

Kollsman Instrument Corporation
Elmhurst, New York
MA1, MA2 (1956)

Mergenthaler Linotype Company
Brooklyn, New York
Ball Recording Sextant (1944)

六分儀についての本は

Taking the Stars: Celestial Navigation from Argonauts to Astronauts
Peter Ifland (著)

六分儀に関するリンクは

 Epact: Scientific Instruments of Medieval and Renaissance Europe

 The History of the Sextant
 

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