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This holding fixture is useful in association with apparatus for measuring surface aspects of thin articles, e.g., thickness of foils, to provide precise and consistent measurements.
English (United States)
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Holding Fixture For Thickness Measuring Apparatus
This holding fixture is useful in association with apparatus for measuring
surface aspects of thin articles, e.g., thickness of foils, to provide precise and
The fixture 1, conveniently arranged as a sliding tray, contains two identical
pockets 5 and 6; one for holding the sample 5a to be measured and the other for
holding a calibration standard sample (not shown). Each pocket has annular
grooves 7 communicating through ducts 8, 9 with a valved source of negative
Upon insertion of the fixture into a measuring apparatus (not shown),
vacuum applied to grooves 7 in pockets 5 and 6 holds the test and standard
samples in a precise and consistent orientation relative to sensing elements in
the measuring apparatus.
The apparatus is calibrated to the standard sample each time a test sample
is loaded for measurement, enabling the operator to adjust for short term drift
and hence obtain precise and consistent measurements.
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