High Quality Marine Nautical Sextants Navigation
A sextant is an instrument for measuring the angle between two objects by bringing into coincidence to the eye of the observer, rays of light received directly from one object and reflected from the other. Its principal use is to measure the altitudes of celestial bodies above the visible sea horizon. Available in various types. When ordering, specify telescope (magnifying & lens diameter) and whether the sextant should be with or without illumination. Furnished with a wooden or plastic case.
Marine Sextant is a kind of reflection type angular measuring optical instrument, chiefly used for measuring the altitude of celestial bodies to obtain a position in navigation. The VERTICAL, ERROR, LATERAL ERROR and INDEX predetermined before use.
APPLICATION
1. Measuring the altitude of celestial bodies to determine the position of the ship at sea;
2. Measuring the two horizontal angles between three known position land objects the ship location on chart by the help of a station pointer;
3. Measuring the vertical angle of a known altitude object to obtain its distance.
2.Chiefly used for measuring the altitude of celestial bodies to obtain a position in navigation.
3. Nautical sextant in the back of the fan-shaped frame with a handle for gripping,with movable arm on the frame
Type | GLH130-40 | GLH130-20 |
Measuring range | -5°~130° | -5°~ 130° |
Accuracy | ±20" | ±10" |
Detectability | 8.75" | 8.75" |
Field of view | 5" | 5" |
Objective the optical | 40mm | 40mm |
Exit pupil diameter | 11mm | 11mm |
Temperature range | -30°~+50C | -30°~+50C |
Telescope | 3.5x40 | 3.5x20 |
Lamp voltage | 3V | 3V |
Net weight | 1.2 kg | 1.8 kg |
Supply voltage | 12V | 12V |
Size | 162mm | 162mm |
Measurement Accuracy | ±10" | ±10" |
Name | quantity | |
Sextant Frame | 1 | |
Monocular Telescope | 1 | |
Standby Bellows | 1 | |
Spare Bulb | 1 | |
Oil pot . | 1 | |
Screw whorls | 1 | |
Brush | 1 | |
Flannelette | 1 | |
Instruction Material | 1 | |
Calibration Wrench | 1 | |
1. Our Shipyard: Ningbo Zhenhe shipyard, and now Taihang is the branch representative of our yard.
2. Our founding team has experience of more than 15 years in shipbuilding and ship repair with our own engineer and designer.
3. Equipment quality guarantee: Based on shipyard feedback, we built up a manufacturer file to ensure the good quality of the products. Also, we can send our engineers to help our clients install and test these exported equipment.
4. We are a second-hand ship broker to help you find the satisfied used different kinds of vessels.
5. We are able to provide the CKD kits and one-stop service based on our laser-cutting machine and purchase ability
6. We have a very professional design and technical team to work out perfect plans for our clients and help to solve any matters with pre-sale and after-sale.
7. Customer Distribution: Tanzania, Rwanda, India(Mumbai and Kolkata), Suva, Portugal, Russia, Netherlands, Iceland, Denmark, Malaysia, Mexico.......
