Davis Instruments Mark 25 Master Sextant Deluxe 025. 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...
Davis Instruments Mark 25 Master Sextant Deluxe 025. 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...
