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Davis Master Marine Sextant Deluxe - Mark 25

The Davis Master Sextant Deluxe - Mark 25
Full-field Beam Converger with quartz hardcoat replaces conventional halfsilvered mirror. Horizon and astrobody images are combined in a single fullfield for easy, reliable sights under the most difficult conditions.

Mark 25 Sextant Features

  • Special mineral coating is selective for different wavelengths of light. Horizon is transmitted in one colour region and the star or sun in another.
  • Improved reinforced plastic stiffens frame for greater measurement accuracy.
  • High-efficiency LED (solid-state Light Emitting Diode) illumination system, which floods arc and drum with soft light. Positive “push-on” switching action, with vinyl boot water protection.

*Average LED half-life is approximately 10 years if operated continuously.

All Davis Master Sextants feature the following professional specifications:

  • 18cm (7”) frame radius. Graduation 120° to ?5°
  • Index mirror rectangular, 50 × 38mm (1.98” × 1.49”).
  • Precision machined slow travel gear and worm mechanism.
  • Highly visible, easy-to-read micrometer drum and vernier allowing readings to 2/10 minute of arc.
  • Fully ribbed, three-circle sextant body for platform strength and stability.
  • Large, contoured handle designed for sure, steady grip and angled back for added control.
  • Seven large sunshades allow complete, independent adjustment of shading density for horizon and index mirrors.
  • 3 × 27 mm star telescope with anti-reflective coated glass lenses, plus separate hooded sight tube for glare-free sun shots.
  • Neck lanyard frees hand and protects sextant.
  • Tough, fully padded, shockresisting carrying case with compartments for extra batteries and mirror kits.
Tags: Sextants