Inventors:
Anthony Storace - Norwalk CT
Albert V. Yannella - Milford CT
International Classification:
G01B 516
G01B 524
G01B 730
G01B 1928
Abstract:
A tool for the measurement and inspection of tolerances in pipe threads on pipes and couplings, etc. formed as a pair of pivoting jaws having handles. One of the jaws includes an assembly of probes mounted for longitudinal displacement in a direction normal to the longitudinal axis of the pipe or coupling, the probes also being slideably supported within the assembly for transverse displacement in a direction parallel to the longitudinal axis of the pipe. Transducers are provided for measurement of the motion of the probe. The second jaw coacts with the first jaw for clamping action, the probes are displaced transversely so as to set into troughs of the threads whereby the probes are aligned for measurement of thread length. The taper is measured by means of an inclinometer disposed at the end of the assembly away from the probes. Normal displacement measures thread height as well as deviation in diameter, the latter providing a measure of the non-linearity of the thread pitch line.