What is (a) Same as Almucantar. (b) A recently invented instrument for observing the heavenly bodies as they cross a given almacantar circle. See Almucantar called?

almacantar — (a) Same as Almucantar. (b) A recently invented instrument for observing the heavenly bodies as they cross a given almacantar circle. See Almucantar. (Webster's 1913.)

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