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Personne àcontacter Mr. niki
Tongjiang road 398-1, Changzhou, Jiangsu
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 ***** principal use is to measure the altitudes of celestialbodies above the visible sea horizon.Avaliable in various types.When ordering, specify telescope (magnifying
