TEST POWER

HEY GUYS. WHAT IS THE CHEAPEST WAY I CAN TEST THE OUTPUT POWER OF MY GREEN LASER?

i really dont wanna buy any high tech equiptment. maybe i can send my laser to some body who has a laser check?

THANKS
shark_01

what power level is it? i know there is a semi accurate way of useing a multimeter and a green LED, but it can be close to spot on, or waaay off. the higher the power level, the easier this works. pm me if you want me to try to explain it.