Tube internal measuring instrument

Details Tube internal measuring instrument Tube internal measuring instrument

1979-04-09

1980-12-30

Myracle, Jerry W.

Measuring and testing

Vibration

By mechanical waves

G01N 2900

Patent

active

042416094

ABSTRACT:
This invention relates to an internal measuring instrument for directly measuring wall thickness and for detecting flaws within the wall of a tube. This instrument comprises a rotatable disc support adapted to be moved through a length of tubing the disc having at least three holes spaced equal distance apart about its circumference, at least one laterally movable search unit compressively positioned in one of the holes, laterally movable contact shoes compressively positioned in the remaining holes, a rotatable handle having a visible indication mark corresponding to the position of the search unit, a conduit connecting the disc support to the handle, and an indicating device electrically connected to the search unit for directly presenting the internal characteristics of the tubing.

REFERENCES:
patent: 3417609 (1968-12-01), Graham
patent: 3960006 (1976-06-01), Smith

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