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A plug gauge which has its ‘Go’ and ‘No Go’ sizes on the same end are known as:

  • A.Continuous plug gauge
  • B.Progressive plug gauge
  • C.Single ended plug gauge
  • D.Double ended plug gauge

Answer: B

A plug gauge with its Go and No Go sizes on the same end is a progressive plug gauge.

On a progressive gauge the Go diameter comes first and the No Go diameter is a short step behind it on the same end. A single push checks the hole: the Go part enters and the gauge stops at the No Go step. That is quicker than turning the gauge round, so it suits through holes in production inspection.

A double ended plug gauge has the Go member at one end of the handle and the No Go member at the other, so it is the opposite arrangement. 'Single ended' describes a gauge with one gauging end, which on its own does not say it carries both sizes, and 'continuous' is not a standard gauge type.

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