Optics: measuring and testing – Angle measuring or angular axial alignment – Apex of angle at observing or detecting station
Patent
1997-03-19
2000-03-07
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
Apex of angle at observing or detecting station
180169, 356 301, 356 401, G01C 300, G01C 308, G01B 1126, B60T 716
Patent
active
060347643
ABSTRACT:
A portable instrument combines an electronic distance or range finder with an electronic difference finder for vertical (i.e., elevational) angle mensuration in order to at least to determine or compute, from a remote distance away, a vertical clearance between a bridge overpass and an under-passing highway. The instrument is at least sighted manually on one of a bridge overpass or the under-passing highway, but instantaneously gives computed values once activated.
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Bay Jonathan A.
Buczinski Stephen C.
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