Description
Davis Mark 15 Master Sextant | Boat Supply Store
For the mariner prioritizing independent navigation, this Davis Instruments sextant provides reliable celestial plotting capabilities. It features a 7-inch frame radius and a micrometer drum vernier scale calibrated to read to 2/10 of a minute, ensuring precise altitude measurements for sights. The inclusion of seven large sunshades and a 3mm x 27mm star scope supports accurate observations in varying light conditions, making it suitable for offshore passage planning.
Key Features
- Accurate Readings to 2/10 of a minute with micrometer drum vernier scale.
- Generous Frame with 7" (18 cm) radius for stable measurements.
- Enhanced Visibility through seven large sunshades for solar observation.
- Precise Observation capability with the 3mm x 27mm star scope.
- Traditional Reliability using a half-silvered mirror for celestial fixes.
- Wide Measurement Range from 120° to -5° for diverse celestial bodies.
- Durable Construction built for the demands of marine environments.
- Immediate Use without any complex installation process.
Specifications
| Product Specifications | |
|---|---|
| Frame radius | 7" (18 cm) |
| Graduation | 120° to -5° |
| Micrometer drum vernier scale reads to | 2/10 of a minute |
| Sunshades | Seven large |
| Star scope | 3mm x 27mm |
| Mirror type | Half-silvered |
Who This Is For
This instrument is engineered for experienced mariners and dedicated celestial navigators requiring a dependable tool for traditional offshore passage planning. Serious sailors who demand accuracy and robust performance in their navigation equipment will find this sextant indispensable.
How It Compares
| Feature | Davis Mark 15 Master Sextant | C. Plath S.G. Brown |
|---|---|---|
| Frame Radius | 7" (18 cm) | 7.5 inches |
| Micrometer Drum Vernier Scale Precision | 2/10 of a minute | 1 arc minute |
| Mirror Type | Half-silvered | First surface aluminum |
| Sunshades | Seven large | Multiple |
Common Concerns Answered
What are common user complaints about the Davis Mark 15 Sextant?
While generally well-received for its accuracy and value, some users note a preference for first-surface mirrors for slightly improved light transmission. Additionally, the star scope is functional but not as powerful as those found on higher-end professional-grade models.
Is the Davis Mark 15 Sextant difficult to learn or use?
Celestial navigation itself can present a learning curve, and modern electronic systems are readily available. However, for those committed to traditional methods, the Mark 15 offers excellent value; its features are well-justified by its price point compared to more basic sextants.
How does the precision of the Mark 15 compare to other sextants?
The Mark 15's micrometer drum vernier scale reads to 2/10 of a minute, offering excellent precision for its class. Competitors like the C. Plath S.G. Brown Mariner Sextant read to 1 arc minute, while the Freiberger 1000 Sextant offers higher precision at 0.2 arc minutes.
Frequently Asked Questions
What is the accuracy of the Davis Mark 15 Sextant?
The micrometer drum vernier scale on the Davis Mark 15 Master Sextant reads to 2/10 of a minute, providing a high degree of precision for celestial observations.
What is the frame radius of the Davis Mark 15 Sextant?
The Davis Mark 15 Master Sextant features a 7-inch (18 cm) frame radius, contributing to stable and accurate measurements.
What type of mirror does the Davis Mark 15 Sextant use?
The Davis Mark 15 Master Sextant utilizes a traditional half-silvered mirror.
What is included with the Davis Mark 15 Sextant?
The Davis Mark 15 Master Sextant includes seven large sunshades and a 3mm x 27mm star scope. It is ready for immediate use upon unboxing.
Can the Davis Mark 15 Sextant be used for celestial navigation?
Yes, the Davis Mark 15 Master Sextant is specifically designed and capable of being used for accurate celestial navigation at sea.
