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Subject Item
isa:293995532
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prov:value
Briefly, the present invention is a device for measuring the elevation of a member positioned below a manhole having an upper surface, the device including (1) an elongate pole having a longitudinal axis and preferably having a dimensioning printed along a length thereof, (2) a slide moveable along the pole, (3) extension means on the slide for extending perpendicular to the axis of the pole, the
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n4:com
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isa:293995532
Subject Item
isap:135376217
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isa:293995532