Davis Mark 25 Deluxe Sextant 025

Binnacle.com #:  20036
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Davis Mark 25 Deluxe Sextant 025

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With a high-efficiency LED illumination system, which floods Arc and Drum with soft light. The LED will last for the lifetime of the sextant.
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Binnacle.com:   #20036
MFG Part#:   025
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Davis Deluxe Mark 25 Sextant with full-field dielectric Beam Converger

The top of the line Davis plastic sextant, the Mark 25 features a Beam ConvergerTM mirror, sometimes referred to as a "full horizon mirror". A special coating is applied to high quality optical glass to allow the user to see through this mirror, yet still pick up images as faint as low-light stars.

The Mark 25 is illuminated by a long-life LED and made of an upgraded grey plastic that is very stable.
  • Full-field Beam Converger with quartz hardcoat replaces conventional half-silvered mirror. Horizon and astrobody images are combined in a single full-field for easy, reliable sights under the most difficult conditions.
  • Special mineral coating is selective for different wavelengths of light. Horizon is transmitted in one color region and the star or sun in another.
  • Improved reinforced plastic stiffens frame for greater measurement accuracy.
  • High-efficiency LED illumination system, which floods Arc and Drum with soft light. The LED will last for the lifetime of the sextant (average LED "half-life" is approx. 10 years if operated continuously). Batteries, which are included, will last up to 10 times longer than with regular bulbs.
  • Positive "push-on" switching action with vinyl boot water protection.
  • Professional specifications:
    • 7" (178 mm) frame radius. Graduation 120 degrees to -5 degrees.
    • Rectangular index mirror, 1.98" x 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, 3-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 x 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, shock-resistant carrying case with compartments for extra batteries and mirror kits.
    • Beam Converger with Viewing field: 1.61" x 1.16" (43 x 29 mm).
    • LED on both Arc and Drum, uses two 1.5V AAA batteries. 
    • Weight 16.5 oz.

  Davis MK 15 & MK 25 Sextant Users Guide
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Money Back Guarantee
Guarantee You may return your purchase to us (with a return authorization number - use this form) within 30 days and we will refund the purchase price of the product. Items which are cut to order (rope, wire etc), software, chart cards and printed materials (paper charts, books) are not returnable.
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