Prism Telescope 7×35
$274.00
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.
Description

What makes a good scope? Although this scope has higher quality optics than any being currently made for sextant use, the most important feature is the fork (sometimes called a rising piece) that should be exactly perpendicular to the optical axis. Each degree of error in this will add a one minute error in high altitude sextant sights. The fork on this scope is cast as part of the aluminum body, and has no error of perpendicularity. All other currently available high powered scopes are merely one-half of a binocular set, with a fork screwed onto the side. We have seen errors as high as 3 degrees on some of them.
The 7×35 Prism Telescope fits the following modern metal sextants:
- Astra IIIB
- Astra III Professional
- Cassens & Plath
- C. Plath
- Tamaya (full sized)
Additional information
Weight | 1.5000 lbs |
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Dimensions | 0.0000 × 0.0000 × 0.0000 in |
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