Adjustable cross hair assembly

Details Adjustable cross hair assembly Adjustable cross hair assembly

1994-11-03

1996-04-30

Cuchlinski, Jr., William A.

Geometrical instruments

Straight-line light ray type

Reticle

F41G 142

Patent

active

055113184

ABSTRACT:
A cross hair assembly has an adjustable cross hair intersection point to facilitate calibration of the cross hair assembly relative to the optical axis of an associated x-ray radiation source. Each cross hair has a fixed anchorage on a mounting frame, and an adjustable anchorage on the mounting frame. By selectively adjusting the adjustable anchorages it is possible to change the cross hair intersection point. Each cross hair is a steel wire having a relatively small diameter; a coil spring is included in each fixed anchorage for holding the wire in a taut condition free from sagging or bending.

REFERENCES:
patent: 618161 (1899-01-01), Brightmore
patent: 2189766 (1940-02-01), Unertl
patent: 2562695 (1951-07-01), Brown
patent: 2893124 (1959-07-01), Sundquist
patent: 4535544 (1985-08-01), Jones et al.
patent: 5220907 (1993-06-01), Lonsdale

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