Radial arm strike rail

Details Radial arm strike rail Radial arm strike rail

1989-08-31

1991-02-26

Brown, Brian W.

354293, 33281, 33286, 33304, G03B 2900

Patent

active

049965476

ABSTRACT:
The radial arm strike rail assembly is a system for measurement of bearings, directions, and stereophotography for geologic mapping, particularly where magnetic compasses are not appropriate. The radial arm, pivoting around a shaft axis, provides a reference direction determination for geologic mapping and bearing or direction determination. The centerable and levelable pedestal provide a base for the radial arm strike rail and the telescoping camera pedestal. The telescoping feature of the radial arm strike rail allows positioning the end of the rail for strike direction or bearing measurement with a goniometer.

REFERENCES:
patent: 2077381 (1937-04-01), Eastman
patent: 2956764 (1960-10-01), Nakatani

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