Geometrical instruments – Distance measuring – Opposed contacts
Patent
1998-04-13
2000-05-16
Bennett, G. Bradley
Geometrical instruments
Distance measuring
Opposed contacts
269165, 33502, G01B 500
Patent
active
060619228
ABSTRACT:
A length correction device includes a rail including two side plates formed with two elongated slots and two fixing blocks fixedly mounted between said side plates, a seat including a main body, a collar, a packing and a knob, a rectangular block formed with a threaded hole and a recess at one side thereof and two pin holes and a threaded hole at a lateral side thereof, and a positioning plate fixedly mounted on said rectangular block.
REFERENCES:
patent: 3496758 (1970-02-01), Sunnen
patent: 3866897 (1975-02-01), Whalen, Jr.
patent: 3975828 (1976-08-01), Calcaterra et al.
patent: 4274205 (1981-06-01), Starr et al.
patent: 5167077 (1992-12-01), Etchell
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