Marine Sextants / Nautical Sextants Model : GLH130-40 Nautical sextant in the back of the fan-shaped frame with a handle grip for use , with movable arm on the frame , Arm figure is an indicator that the top mirror ; semi- reflective mirror mounted sextant horizon to the left ( middle , n telescope 's ) , next to the mirror comes horizon filter for use when measuring the bright sun and other celestial bodies . When measuring altitude of celestial bodies , hand-held sextant observations , let the telescope tube to maintain the level and measured by the celestial horizon mirror reflection as viewed from a telescope ; the same time to regulate the activities of arms , making astrological telescope in the fall see on the horizon . This is also the reason for the semi-reflective glass horizon mirror manufacturing need .

IMPA CODE	DESCRIPTION	UNIT
CT370331	MARINE SEXTANTS GLH130-40	SET