Edit - this meter has been sold
Molectron PM5100 Laser Power Meter with PM10 Thermopile - eBay (item 230568651684 end time Jan-06-11 17:01:35 PST)
I have since upgraded to the LM series equipment, so my old PM10 head and PM5100 meter are up for grabs.
If you want to purchase it directly (not...