Sextant

A sextant and body technology, applied in the field of sextants, can solve the problems of reduced accuracy, easy oxidation and rust on the surface, shortened service life of the sextant, etc., so as to prolong the service life, isolate corrosion, and have good oxidation effects. Effect

Inactive Publication Date: 2014-01-01
CHANGZHOU HAOMAI MARINE EQUIP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sextant has been used in wet seas for a long time, and the surface is easily oxidized and rust...

Method used

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  • Sextant
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Examples

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Embodiment Construction

[0011] See figure 1 and figure 2 As shown, a sextant has a body 1, and the surface of the body 1 has a protective layer 2; the protective layer 2 is an alumina bonding layer. Through the protection of alumina, the whole sextant has good anti-oxidation performance and prolongs the service life of the sextant.

[0012] The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

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Abstract

The invention discloses a navigation surveying and mapping instrument, and particularly relates to a sextant provided with a body. The surface of the body is provided with a protective layer, and the protective layer is an alumina adhesive layer. The alumina adhesive layer arranged on the surface of the sextant has strong adhesion ability, not only can be in favor of a coloring effect of a paint, but also can isolate corrosion of moist air to the sextant, and thereby playing an effect of protecting the sextant and prolonging the service life.

Description

technical field [0001] The invention relates to a nautical surveying and mapping instrument device, in particular to a sextant. Background technique [0002] In the field of navigation, a sextant is an optical instrument commonly used to measure the angle between two distant targets. It is usually used to measure the angle between the sun or other celestial bodies and the sea level or horizon at a certain moment, so as to quickly know the latitude and longitude of the position of the ship or aircraft. The sextant has been used in wet seas for a long time, and the surface is easily oxidized and rusted, which not only reduces the accuracy of measurement, but also shortens the service life of the sextant. Contents of the invention [0003] The object of the present invention is to solve the above-mentioned existing problems, and provide a new type of sextant which is simple in structure, easy to use, anti-oxidation, and prolongs the service life of the sextant. [0004] The...

Claims

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Application Information

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IPC IPC(8): G01C1/08
CPCG01C1/08
Inventor 朱亮狄丹岩
Owner CHANGZHOU HAOMAI MARINE EQUIP TECH
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