Ring gauge with maintenance line and round point and method of manufacturing the same
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United States of America Patent
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Jan 3, 2017
Grant Date -
Oct 9, 2014
app pub date -
Jan 31, 2014
filing date -
Apr 3, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A ring gauge with a maintenance line, which can reliably and quickly let a user know at an early stage the time for replacement during maintenance of a ring gauge, is provided with a ring gauge body which has, on an inner portion, a hole-shaped measuring portion having a circular shape in a planar view and serving as a reference for various types of measuring devices, a predetermined thickness, an upper surface portion, a lower surface portion, and a wear checking gauge line which can have a linear shape formed on an inner diameter portion of the hole-shaped measuring portion.
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