Measuring and testing – Liquid level or depth gauge
Patent
1978-06-08
1980-01-15
Watkins, Donald
Measuring and testing
Liquid level or depth gauge
G01F 2314
Patent
active
041832469
ABSTRACT:
A probe for use when filling the hollow walls of an existing building with insulation. The probe in the present invention detects, by a pressure responsive means, when the insulation being distributed between the walls of a building has reached the level of the probe.
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