Measuring and testing – Liquid level or depth gauge – Hydrostatic pressure type
Patent
1977-05-04
1978-07-04
Woodiel, Donald O.
Measuring and testing
Liquid level or depth gauge
Hydrostatic pressure type
G01F 2316
Patent
active
040981100
ABSTRACT:
A capillary depth gauge employs a transparent cover member having an annular magnifying lens portion overlying the capillary passageway to facilitate reading of the gauge.
REFERENCES:
patent: 3188864 (1965-06-01), Dean
patent: 3528290 (1970-09-01), Lecocq
patent: 3717032 (1973-02-01), Alinari
Dacor Corporation
Patnaude Edmond T.
Woodiel Donald O.
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