FIRST has traditionally provided all required components for your robot in the KOP. This year, this is not the case.
The 2010 KOP has one pressure gauge. However, at least two are required (as per <R76> item C) if the pneumatic system is used on your robot.
Veteran teams will no doubt have extra gauges from previous years but rookie teams may not have access to spares.
If you are a rookie team and plan to use the pneumatic system on your robot, you will need to purchase a second gauge or ask a veteran team for a spare.
Veteran teams would do the rookies a service by bringing one or two extra pressure gauges to their competitions.
Regards,
Mike