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Which one of the gauges are used to check the accuracy of an external thread?

Which one of the gauges are used to check the accuracy of an external thread? Correct Answer Thread ring gauges

Explanation:

  • Limit gauges are used in inspection because they provide a quick means of checking.
  • The Go and No-Go principals of gauging are that the Go-end of the gauge must go into the feature of the component being checked and the No-Go end must not go into the same feature.
  • There are different types of cylindrical plug gauges.
Double ended plug gauge

Used for checking the diameter of a straight hole.

The Go-gauge checks the lower limit of a straight hole and the No-Go gauge checks the upper limit.
Progressive plug gauge
Plain ring gauge Used to check the outside diameter of the workpieces.
Taper plug gauges Used to check the size of the hole and the accuracy of the taper.
Taper ring gauges Used to check both the accuracy and the outside diameter of a taper.
Thread plug gauges Used to check the form and dimensional accuracy of the internal threads.
Thread ring gauges Used to check the form and the dimensional accuracy of an external thread.
Snap gauges USed as a quick means for checking sizes within certain limits by comparing the size of the parts with the opening of the gauge.

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