Means for measuring a diameter

Details Means for measuring a diameter Means for measuring a diameter

2006-03-28

2010-11-30

Toatley, Gregory J (Department: 2877)

Optics: measuring and testing

Dimension

Width or diameter

Reexamination Certificate

active

07843576

ABSTRACT:
A diameter measuring instrument that comprises a straight-edge and two legs or jaws, wherewith the distance between the legs can be read-off. The invention is characterized in that the straightedge (2) is provided with a leg (3) which is fixed in relation to the straightedge and a leg (4) which is movable relative to the straightedge, or alternatively with two legs that are movable relative to the straightedge; in that each leg (3, 4) includes a laser (5, 6) which is designed to emit a visible laser beam (7, 8) in a direction that coincides with the length direction of respective legs (3, 4); and in that the laser beams (7, 8) are parallel to one another.

REFERENCES:
patent: 3749500 (1973-07-01), Carlson et al.
patent: 5457635 (1995-10-01), Scott
patent: 100 32 362 (2002-01-01), None
patent: 101 54 978 (2003-05-01), None
patent: 11-166826 (1999-06-01), None
patent: WO92/14116 (1992-08-01), None

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