Elevation measuring instrument with selectable measurement scale

Details Elevation measuring instrument with selectable measurement scale Elevation measuring instrument with selectable measurement scale

1980-12-12

1982-09-14

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33147R, 116289, G01B 322

Patent

active

043488137

ABSTRACT:
A microcomparator for elevation measurements having an amplification mechanism (3) which consists of a lever (31), the lever transforming the linear movement of a feeler (5) into a circular movement, and a lever arm (32) formed at least partly by calibrated rods (36) juxtaposed parallel to each other. The feeler (5) engages one of the calibrated cylinders (36) in accordance with the desired amplification factor without requiring altering the zero set for each change of scale. The amplification mechanism (3) and the display means (4) are fixedly connected with a carriage rotatably mounted on the housing (1) allowing a zero setting in such a manner that the display means always shows the same zero point as a function of the carriage (2). The microcomparator may also contain an automatic device for taking off measurements and a window containing a groove in which tolerance indicators may be carried.

REFERENCES:
patent: 2077123 (1937-04-01), Mahr
patent: 2190961 (1940-02-01), Webber
patent: 3483627 (1969-12-01), Olasz et al.

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