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The type of micrometer used in astronomy consists of two fine wires, one fixed and the other movable, placed in the focal plane of a telescope; the movable wire is fixed on a sliding plate and can be positioned parallel to the other until the object appears between the wires.
The movement is then indicated by a scale on the adjusting screw.
Red recalls the struggle for independence. Blue stands for the Indian Ocean. Yellow expresses hope for a bright future. Green represents agriculture and vegetation. Effective date: 12 March 1968.
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