A differential transformer gauge for outside and inside diameters of long tubes /

An instrument is described which measures the outside and inside diameters of tubes twenty feet long. The outside and inside diameters are approximately 3.5 and 3.0 inches, respectively. Linear variable differential transformers mounted in special probes are used as the sensing elements. The dimensions are measured with an accuracy of ℗±0.001 inch. Both diameters can be measured continuously as the probes are pushed down the length of the tube."Instruments (TID-4500, 13th Ed., Suppl.).""Printed for the United States Atomic Energy Commission Contract AT(07-2)-1.""January 1958.""DP-263."Includes bibliographical references (p. 7).An instrument is described which measures the outside and inside diameters of tubes twenty feet long. The outside and inside diameters are approximately 3.5 and 3.0 inches, respectively. Linear variable differential transformers mounted in special probes are used as the sensing elements. The dimensions are measured with an accuracy of ℗±0.001 inch. Both diameters can be measured continuously as the probes are pushed down the length of the tube.Mode of access: Internet