Theodolite center mounting means
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United States of America Patent
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Mar 10, 1981
Grant Date -
N/A
app pub date -
Aug 20, 1979
filing date -
Aug 20, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Means for conjointly mounting center members of dissimilar metals for stable concentric rotation about a theodolite spindle comprises a plurality of radially-extending guide grooves on one of the members disposed regularly about the axis of the spindle, and a like plurality of support elements affixed to another of the center members and similarly disposed about the spindle axis to seat respectively in the guide grooves. The support elements being thus limited by the guide grooves to precise radial movement, any dissimilar thermal expansions of the center members result in relative movement between them which is concentric with the spindle axis.
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