Last hidro survey practical, i had learn about one instrument in hidrographic survey.That we call sextant. The main funtion is to get position on the sea.Sextant is a navigational instrument used to measure the angle of elevation of celestial bodies, usually the sun or moon, in order to determine one's location and direction.Generally, sextant can be used to measure the angle between any two objects.It was first developed around 1730 and soon after began to replace the astrolabe as the navigational instrument of choice.Nowadays it still been used as a main backup in case of global positioning system (GPS) fail to operate.
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hello :) I am a Geomatics Engineering student from Uni of Melbourne. I am a Malaysian chinese. Just wanna let you know that you're doing an awesome job updating the site with very useful geomatics science info. Keep it up and hope to meet you or work with you soon:) -francisgoh
hai francisgoh...
nice to meet you also,sory if i say that my english is not so good. please not hesitate to ask me any question. we can share our knownledge together. study smart but not to hard.that all...
best regard
boomelake
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