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Class Information
Number: 33/786
Name: Geometrical instruments > Distance measuring > Opposed contacts > Fluid indicator > Liquid column indicator
Description: Subject matter wherein a column of liquid is subjected to a pressure and the height of the liquid indicates the distance.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
4934198	Displacement and torque sensor using resistance element that is progressively shorted	Jun. 19, 1990
4793071	Arrangement for measuring the relative distance of closely adjacent objects	Dec. 27, 1988
4706387	Device for measuring hole elongation in a bolted joint	Nov. 17, 1987
4691445	Horizontal evaluation datum scope	Sep. 8, 1987
4307514	Bore diameter measurement gage	Dec. 29, 1981