Calipering tool

Details Calipering tool Calipering tool

G - Physics

01

B

33/186

G01B 3/00 (2006.01) E21B 47/08 (2006.01) G01B 5/00 (2006.01) G01B 5/207 (2006.01) G01B 7/00 (2006.01)

Patent

CA 1142749

CALIPERING TOOL ABSTRACT A calipering tool for use in a pipe and having a body and feeler means mounted with the body for engaging the surfaces of the pipe being calipered and with feelers moving in response to variations in the surface of the pipe, improvements residing in pairs of stylus members, including active and base-line styli, each active stylus adapted to engage a chart and move relative thereto in response to movements of a feeler and with each base-line stylus adapted to engage the chart adjacent the active stylus for providing an individual base-line for the respective active stylus for providing accurate dimensional recording and continuing thermal calibration of the calipering tool in response to temperature variations encountered within the pipe and a new removable stylus assembly capable of being removed from the calipering tool as a unit for repair and/or replacement as is necessary without requiring replacement of the entire calipering tool.

355933

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