Geometrical instruments – Area integrators – Electrical
Patent
1985-12-19
1987-04-07
Little, Willis
Geometrical instruments
Area integrators
Electrical
33149R, G01B 338
Patent
active
046549749
ABSTRACT:
The present invention discloses a thickness measuring caliper comprising a pair of legs in fixed spacial relationship, one leg of said pair is elongated and curved along its length and has a free end adapted for engagement with a surface of a member the thickness of which is to be measured, the other leg of said pair is elongated and has a free end which lies adjacent the free end of the first leg and is spaced therefrom by at least the maximum thickness to be measured by the caliper, an elongated third leg curved along its length is pivotally connected at one end to said other leg and the other end of the third leg is adapted for engagement with a surface of a member the thickness of which is to be measured and is aligned with and engageable with the free end of said one leg, said other leg and said third leg have overlying portions to provide a measuring assembly with a registration marking on one of said portions and a scale on the other of said portions whereby a direct reading of the spacing apart of said free end of said one leg and said other end of the third leg can be made.
REFERENCES:
patent: 1182715 (1916-05-01), Severance et al.
patent: 1290294 (1919-01-01), Mossman
patent: 1879941 (1932-09-01), McCabe
patent: 3011262 (1961-12-01), Allen et al.
patent: 3014281 (1961-12-01), Caporicci
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