Geometrical instruments – Area integrators – Electrical
Patent
1978-03-17
1979-09-11
Stephan, Steven L.
Geometrical instruments
Area integrators
Electrical
33138, G01B 310
Patent
active
041670655
ABSTRACT:
A device for measuring an oil well drill pipe in a relatively clean manner; the device including a foot unit for engaging a lower end of the pipe and a head unit for engaging the upper end of the pipe, and a steel measuring tape extending therebetween.
REFERENCES:
patent: 4033041 (1977-07-01), Allums
Alaniz Matt
Spector George
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