Macrometer

From Wikipedia, the free encyclopedia

This article is orphaned as few or no other articles link to it.
Please help introduce links in articles on related topics. (November 2007)

A macrometer is an instrument for measuring the size and distance of distant objects. Distant in this sense means a length that can not be readily measured by a calibrated length. The optical version of this instrument used two mirrors on a common sextant. By aligning the object on the mirrors using a precise vernier, the position of the mirrors could be used to compute the range to the object. The distance and the angular size of the object would then yield the actual size.

The Macrometer Interferometric Surveyor is a commercial GPS-based system for performing geodetic measurements.