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.
The latter are in fact little microscopes carrying a vernier etched on glass, in lieu of a filar micrometer.
The lamp c illuminates the drum-head and also, by reflection, the portions of the position-circle which come under the microscopes d and e.
Repsolds employ for the micrometers of their reading microscopes the form of construction shown in fig.
In the apparatus of type B as made by Zeiss there are two microscopes attached to a base-plate, one of which views the spectrum-plate (or other object) to be measured, while the other views a scale that moves with the slide on which the spectrumplate is mounted.
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