Geometrical instruments – Area integrators – Electrical
Patent
1981-04-16
1984-01-03
Martin, Jr., William D.
Geometrical instruments
Area integrators
Electrical
33161, 33458, 33478, 33494, G01B 328
Patent
active
044235542
ABSTRACT:
An insulation depth gauge for measurement of insulation depths within an attic at remote locations has a handle for extending linear measuring means to remote locations and indicia to indicate the depth of insulation at that location.
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patent: 2077828 (1937-04-01), Dombrowski
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patent: 3145475 (1964-08-01), Alford
patent: 3274692 (1966-09-01), Morrison
patent: 3559292 (1971-02-01), Weissman
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