Identify an unknown capacitor

I was checking in some bags at the lab looking for capacitors and found one full (a lot!) of green (ceramic?) capacitors.

The capacitors are green, round, flat, with two legs on each side, like so:

  __
(__)
/  \


The package image is:

The only inscription in the package is: 1/NPO

None of the multimeters on the lab has capacitance mode. Is there any way to identify what this capacitor is?

• Another clue: somebody at the lab told me those were bought for a button debounce circuit. Mar 14 '11 at 1:56