Which statement accurately describes how a go/no-go gauge is used?

Which statement accurately describes how a go/no-go gauge is used?

• A. It's used to check depth of holes
• B. If the product fits in the go end but not the no end it is a pass
• C. If the product fits in both ends it is a pass
• D. If the product doesn't fit in the go end it is a pass

Answer: (B)

Go/no-go gauges test a dimension against two limits to see if a part is within tolerance. The go end represents the smallest acceptable size, and the no-go end represents the largest acceptable size. A pass means the part fits the go end but does not fit the no-go end—so it’s larger than the minimum but not large enough to fail the maximum. If it fits both ends, it’s too large; if it doesn’t fit the go end, it’s too small; if it fits the no-go end, it’s out of tolerance. This is why the statement describing fitting in the go end but not the no-go end is the correct description.

Go/no-go gauges test a dimension against two limits to see if a part is within tolerance. The go end represents the smallest acceptable size, and the no-go end represents the largest acceptable size. A pass means the part fits the go end but does not fit the no-go end—so it’s larger than the minimum but not large enough to fail the maximum. If it fits both ends, it’s too large; if it doesn’t fit the go end, it’s too small; if it fits the no-go end, it’s out of tolerance. This is why the statement describing fitting in the go end but not the no-go end is the correct description.