Possible bar ware measuring device? Found mixed with kitchen supplies. Each end is hollow and the inside edges of each cupped end are beveled and nearly sharp. 8-sided center ring keeps it
Handheld Inner Diameter Measuring Gauge — RIFTEK LLC
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What instruments are used to measure the internal diameter of tubes? - Quora
What instrument is used to measure diameter? - Quora
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Unique rebar diameter... - Amazing construction world | Facebook
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Unique rebar diameter... - Amazing construction world | Facebook
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Diameter of the reinforcement measurement - YouTube
