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1.
All systems wound up beyond the safe limit; literally, the needle on an analog dial has gone right round the dial, so far round that it's hit the peg marking the Zero poistion from the back.

Also known as redlining.
"I got the job done, but I was pegging the gauge by the end."
by Eighth of Seven January 07, 2007

Words related to pegging the gauge

emergency going for it maximum power overload redlining redlining.