Sentence Examples


  • µcxp6s, small, i tthrpov, a measure), an instrument generally applied to telescopes and microscopes for measuring small angular distances with the former or the dimensions of small objects with the latter.
  • Before astronomical telescopes were mounted parallactically, the measurement of position angles was seldom attempted.
  • When equatorial mountings for telescopes became more general, no filar micrometer was considered complete which was not fitted with a position circle.'
  • 1893) for large telescopes is shown in fig.
  • The great reflecting telescope at Dorpat was manufactured by him, and so great was the skill he attained in the making of lenses for achromatic telescopes that, in a letter to Sir David Brewster, he expressed his willingness to furnish an achromatic glass of 18 in.

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