Ribbing gauge

The pattern says to do a gauge in the ribbing pattern listed below. When I’m measuring the gauge, do I lay it out as flat as possible or do I let it bunch up like ribbing normally does and then measure?

Row 1: P3, *K3, P4. Repeat from * across, ending row with K3, P3.
Row 2: K3, *P3, K4. Repeat from * across, ending row with P3, K3.

Thanks

That pattern may lie pretty flat, so you might not need to stretch it out much.

measure it as it sits. that is the way it will sit in the pattern.