The top of the line Davis plastic sextant, the Mark 25 features our Beam Converger 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 plastic that is very stable. Comes with instruction booklet.
Standard features of the Mark 25:
18cm frame radius. Graduation 120 to -5 degrees
Index mirror rectangular. 50 x 38mm
Precision machined slow travel gear and worm mechanism
Highly visible, easy to read micrometer drum and vernier allowing readings to 2/10 minute or arc
Fully ribbed, three-circle sextant text 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 27mm 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-resisting carrying case with compartments for extra batteries and mirror kits.
Item No 00025