Device for measuring the circumference of a cylindrical rod
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United States of America Patent
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-
Jan 29, 1980
Grant Date -
N/A
app pub date -
Sep 25, 1978
filing date -
Sep 25, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The hand held measuring device measures the circumference of a cylindrical rod by moving the rod through a measured path between two cylinders. An ink marking device is used to place an index mark on the rolling rod and a transparent scale is used at the end of the measured surface of the outer cylinder to indicate the distance the rod has travelled. Coincidence of the index mark with the scale reading is a measure of the circumference of the rod. The device is operated manually via a hand wheel secured to a trunnion of the inner cylinder.
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