Measuring apparatus

Details Measuring apparatus Measuring apparatus

1983-11-04

1988-09-20

Haroian, Harry N.

Geometrical instruments

Gauge

Work support

33169R, G01B 724

Patent

active

047715502

ABSTRACT:
A system for removing trapped air layers is disclosed for use in a measuring apparatus such as a length measuring apparatus for measuring dimensions of a test object supported on a measuring surface. According to this invention, the measuring surface defines in the region beneath the resting surface of the test object a plurality of openings which are connected to a source of subatmospheric pressure in order to draw off any trapped air layer present between the measuring surface and the resting surface of the test object. In the illustrated embodiment, these openings are connected with an external suction line by means of channels defined in the measuring table.

REFERENCES:
patent: 3520055 (1970-07-01), Jannett
patent: 3639990 (1972-02-01), McInnis
patent: 4099800 (1978-07-01), Bell et al.
patent: 4414748 (1983-11-01), Gauler et al.

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