Optical vernier and its application in angle-measuring instruments
Authors:
Abstract
The optical vernier is based on the principle of bringing into one plane two diametrically opposite, magnified graduations of the graduated circle. The reading accuracy of an optical vernier is twice as high compared to an ordinary vernier. The eccentricity error is automatically eliminated because diametrically opposite graduations of the graduated circle come into play in the formation of the vernier. A theodolite equipped with an optical vernier can be made in a more compact form than a conventional instrument and is much more convenient to handle, especially for surveying work underground.
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(Archived) Articles
Funding:
None