Geometrical instruments – Area integrators – Electrical
Patent
1985-02-11
1986-06-24
Little, Willis
Geometrical instruments
Area integrators
Electrical
33169B, G01B 712
Patent
active
045960747
ABSTRACT:
A curvilinear measuring device having a base plate containing a retaining tapered track in which a slide member moves. On top of the slide member is a digital readout device with a lit LCD on top. The slide device can be removed in turn end for end for making concave measurements. A contact ball moves along the track and electronically changes the voltage which is digitally displayed.
REFERENCES:
patent: 878439 (1908-02-01), Wagniere
patent: 4143267 (1979-03-01), Johnson et al.
Cantarella John J.
Carrier Joseph P.
Little Willis
Weiner Irving M.
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