prismatic astrolabe

noun

Definition of prismatic astrolabe

: a portable instrument consisting of a small telescope, a 60-degree prism, and a mercury reflecting basin by which determinations of time, latitude, and azimuth may be obtained from star observations

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“Prismatic astrolabe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prismatic%20astrolabe. Accessed 22 Sep. 2021.

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