Davis mark 25 beam converger sextant
Davis Instruments Corp. The MARK 25 Beam Converger Sextant with Davis Instruments PrismLevel Instruction Books for both the Sextant and the PrismLevel. The Prism Level solves the problem of finding the bottom of the arc by telling you when the sextant is vertical.Mark 25 Sextant The top of the line Davis plastic sextant, the Mark 25 features our Beam Converger mirror, sometimes referred to as a full horizon mirror . davis mark 25 beam converger sextant
The Mark 25 sextant was developed with more features than the Mark 15. This model features a see through full field Beam Converger mirror and LED illumination that floods the arc and drum with soft light for reading sights taken in darkness. Includes carrying case and instruction booklet.
This is a Davis Mark 25 Beam Converger Sextant. Older Version. Lightweight plastic body. From a local estate. CosmeticsNice and clean overall. Looks like it was barely used. It sat in storage for years. Adjusts smoothly. Illuminator works. Battery compartment negative terminal had some corrosion but cleaned up and makes contact. Mark 25 Sextant 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 lowlight stars.davis mark 25 beam converger sextant Description Like New DAVIS Mark 25 Beam Converger Sextant with padded storage case. The beam converger replaces the conventional 12 silvered horizon mirror. An additional feature is the LED night illuminated scale, usually only found on high end sextants.