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Updated: May 26, 2025
Notwithstanding these hindrances, however, he added several observations to those of Tycho, which he made with two instruments that were presented to him by his friend Hoffman, the President of the States of Styria. These instruments were an iron sextant, 2½ feet in diameter, and a brass azimuthal quadrant 3½ feet in diameter, both of which were divided into single minutes of a degree.
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