NASA NTRS · 19720000391
Two-axis leveling detector system
Abstract
Electro-mechanical device for measuring tilt angles in order to establish level base without optical reference is described. Angular displacement is detected by movement of bubble in conducting fluid containing electrode network. Electrical signal causes compensation for small movements in horizontal and vertical planes.
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Weiner, L.. 1972-07-01. Two-axis leveling detector system. https://ntrs.nasa.gov/citations/19720000391
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