376 RHN Universal Cross Scope Optical Transit Square Sets A New Standard For Precision Measurement In Non-Gravitational Environments

Michael D Holmes

doi:10.1117/12.943119

13 August 1984 376 RHN Universal Cross Scope Optical Transit Square Sets A New Standard For Precision Measurement In Non-Gravitational Environments

Michael D Holmes

Author Affiliations +

Proceedings Volume 0483, Optical Alignment II; (1984) https://doi.org/10.1117/12.943119
Event: 1984 Technical Symposium East, 1984, Arlington, United States

Abstract

Precision optical alignment and/or measurement more often than not requires coordinate systems which for convenience of analysis are not based on a gravity reference system. Conventional jig transits, telescopic transit squares and optical transit squares which rely on a gravity reference system require that measurements be taken from. plumb lines (vertical planes) and level lines (horizontal planes). If the object being analyzed is not oriented coincident to the earth's xis, then data oust be mathematically reduced by use of trigonometry and geometry formulae which mu be time consuming as well as introduce additional potential errors in analysis. A state-of-the-art optical instrument has been developed which virtually defies gravity and allows rapid. setting of orthogonal pl.H.nes without a gravity reference.

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Michael D Holmes "376 RHN Universal Cross Scope Optical Transit Square Sets A New Standard For Precision Measurement In Non-Gravitational Environments", Proc. SPIE 0483, Optical Alignment II, (13 August 1984); https://doi.org/10.1117/12.943119

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