Brass Sextant With Wooden Box for Collectible

Listing ID #7448296

A brass sextant is a precision instrument traditionally used in navigation to measure the angle between two visible objects. Its design and functionality have made it an essential tool for sailors and astronomers since the 18th century. Below is a detailed description of a typical brass sextant:

 1. Material and Build

- Material: The sextant is predominantly made of brass, a durable and corrosion-resistant alloy of copper and zinc. This material not only ensures longevity but also gives the instrument a classic, polished appearance.

- Finish: The brass is often polished to a high shine, sometimes lacquered to prevent tarnishing. The surface may also be adorned with intricate engravings or decorative patterns.

2. Frame and Arc

- Frame: The frame of the sextant is typically a sturdy brass structure, often shaped like a sector of a circle (usually 60 degrees), providing a stable base for the other components.

- Arc: The arc, or limb, is graduated and precisely engraved with degree markings from 0° to 120°. These markings allow for accurate measurements of celestial angles.

3. Telescope

- Optics: A small, adjustable telescope is mounted on the sextant, used to sight objects such as stars or the horizon. The telescope's brass body matches the rest of the instrument, often with fine adjustments for focus.

4. Index Mirror and Horizon Mirror

- Mirrors: The index mirror is attached to the moving arm of the sextant, while the horizon mirror is fixed to the frame. Both mirrors are crucial for reflecting images to measure angles accurately.

- Adjustment Mechanism: The mirrors can be finely adjusted using screws to ensure precise alignment and clear sighting.

5. Index Arm and Vernier Scale

- Index Arm: The movable arm sweeps across the graduated arc. It is equipped with a vernier scale for fine readings, allowing measurements to a fraction of a degree.

- Clamping Mechanism: A brass clamp or micrometer screw is used to lock the index arm in place once the desired angle is measured.

6. Shades and Filters

- Shades: The sextant includes several tinted glass shades (filters) mounted on a rotating arm. These are used to reduce the glare of the sun or other bright objects during observation.

7. Handle and Storage

- Handle: A wooden or brass handle is attached to the back of the frame, providing a comfortable grip for the user.

-Storage Case: The instrument is often housed in a fitted wooden case, lined with protective material and sometimes containing additional tools for calibration and maintenance

8. Markings and Insignia

- Markings: Many brass sextants feature engraved markings such as the maker's name, serial number, and sometimes the year of manufacture. These details add to the historical and collectible value of the instrument.

- Insignia: Some sextants may also bear decorative insignia or crests, often indicating ownership or the vessel it was used on.

Applications and Significance

Brass sextants were historically vital for maritime navigation, enabling sailors to determine their latitude by measuring the angle between the horizon and a celestial body, typically the sun or stars. Today, while modern technology has supplanted traditional navigation tools, brass sextants remain highly valued by collectors, historians, and enthusiasts for their craftsmanship, historical importance, and aesthetic appeal.

Packaging Details 

Proper packaging of a brass sextant is crucial for its protection, preservation, and presentation. 

The packaging of a brass sextant is meticulously designed to ensure the instrument’s protection, ease of transport, and aesthetic appeal. A well-crafted wooden case with internal cushioning, compartments for accessories, and secure outer packaging ensures that the sextant arrives safely and in pristine condition. This attention to detail in packaging underscores the value and craftsmanship of the brass sextant, making it a prized possession for navigators, collectors, and enthusiasts alike