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Astra III Professional
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Astra III Professional with Trad MirrorAstra III Professional with Trad Mirror
Just as the Astra IIIB has become world famous as the premier low cost metal sextant, the Astra III Professional Model with its low cost, high accuracy, and excellent handling qualities is destined to be the standard for professional seamen.  ...
$875.00
SKU 0502P
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Astra III Professional with WH MirrorAstra III Professional with WH Mirror
Just as the Astra IIIB has become world famous as the premier low cost metal sextant, the Astra III Professional Model with its low cost, high accuracy, and excellent handling qualities is destined to be the standard for professional seamen.  ...
$875.00
SKU 0501P
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Extra Traditional Mirror in FrameExtra Traditional Mirror in Frame
Extra mirror for the Astra IIIB - 51mm diameter with mirror frame  ...
$75.00
SKU 0504
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Extra Whole Horizon Mirror in FrameExtra Whole Horizon Mirror in Frame
Spare for the Astra IIIB - 51mm diameter with mirror frame  ...
$75.00
SKU 0503
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Practice Bubble HorizonPractice Bubble Horizon
At long last, here is a way to effectively practice taking sights without having a natural (sea) horizon, and without spending hundreds of dollars for a Professional Bubble Horizon.  ...
$59.00
SKU 0511
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Prism Telescope 7x35Prism Telescope 7x35
The increased magnification allows the sun's diameter to appear larger, and also better defines a more distant horizon as may be seen from a ship. This helps the navigator determine the point of tangency of the Sun's limb and the horizon.  ...
$195.00
SKU 0509A
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Professional Bubble HorizonProfessional Bubble Horizon
This replaces the regular scope and provides a 2X power artificial horizon for use on land, or at sea if extremely calm conditions exist and the natural horizon is not visible. The bubble is centered in the reticle (as shown). The eyepiece can be focussed  ...
$950.00
SKU 0706P
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Slip-on Rubber Eyecup for ScopeSlip-on Rubber Eyecup for Scope
Slip-on Rubber Eyecup for Scope for the AstraIIIB Sextant  ...
$4.00
SKU 0505
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Zero Magnification Sight TubeZero Magnification Sight Tube
It used to be good sextants came with one of these. They were also called clear tubes, and hooded peep sights.Having no lenses, they will not fog or smudge from ocean spray.  ...
$24.00
SKU 0510
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Last Updated: May 22, 2013 06:01 PM
celestial navigation | astro navigation | navigation | sextant | sextants | nautical books | nautical instruments | marine instruments | astronomy | plotting tools | weather stations | binoculars | radios | GPS receivers
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