Davis MK 15 "Micrometer Master" Sextant

The Davis MK 15 Master Sextant has been proven at the Equator and the North Pole! Navigate without GPS!
The Davis MK 15 Master Sextant Features:
*Large easily adjusted mirrors using new instrument-quality glass and a special baked on salt-spray resistant backing. Both mirrors have protective housings. Horizon mirror is half-silvered. No adjustment wrenches required.
*Molded of high impact, weather resistant plastic.
*All Master Sextants feature the following professional specifications:

7" frame radius. Graduation 120 degrees to -5 degrees.
Index mirror rectangular, 1.98" x 1.49" (50x38mm)
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-cirlce sextant body for platform strength and stability.
Large, contoured handle designed for sure, steady grip and angled back for added control.
7 Large sunshades allow complete, independant adjsutment of shading density for horizon and index mirrors.
3 x 27mm star telescope with anti-reflective coated glass lenses, plus separate hooded sight tube for glare-free sun shots.
Neck lanyard frees hands and protects sextant
Tough, fully padded, shock resistant carrying case with compartments for extra batteries and mirror kits.