TAMAYA MS-3L PROFESSIONAL MARINE NAVIGATIONAL SEXTANT WITH 7X50 SCOPE

Complete with instruction manual and original wooden case.

I believe it was manufactured in 1982.

The Tamaya MS-3L is a professional marine navigational sextant featuring built-in illumination and a high-light-gathering 7x50 telescope scope, manufactured by Tamaya Technics in Japan for commercial mariners and ocean-going navigators.

Key Specifications & Features:

Telescope Scope: 7x50 magnification and objective lens diameter optimized for low-light celestial targeting.

Illumination:** Integrated lighting system (designated by the 'L' in MS-3L) to illuminate the micrometer drum and arc during twilight or night sights.

Frame Construction:** Lightweight, corrosion-resistant die-cast aluminum alloy frame paired with a precision-engraved bronze arc.

* ** Measuring Range:** Standard professional scale spanning from -5° to +125° with high-accuracy micrometer drum vernier readings.

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* ** Optics:** Fully coated optical glass configurations paired with multi-stage index and horizon shade glasses. [1, 2, 3, 4, 5]

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Operational Use

* ** Celestial Fixes:** Used to measure precise altitudes of stars, planets, the moon, and the sun relative to the sea horizon.

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* ** Low-Light Performance:** The large 50mm objective lens aperture on the 7x50 scope lets in ample light, making it exceptionally useful for twilight