What is (a) An astrolabe; a planisphere. [Obs.] (b) An instrument for measuring the position, length, and direction, of the apparent path of a shooting star called?

meteoroscope — (a) An astrolabe; a planisphere. [Obs.] (b) An instrument for measuring the position, length, and direction, of the apparent path of a shooting star. (Webster's 1913.)

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