Pete, What Jim said, except that I use a piece of plexiglass (with a small hole drilled in it) and seal it down to the head with a little grease (for a more accurate reading. Surface tension of the liquid will give you incorrect readings otherwise.) Then I used an animal syringe (available at farm supply stores) to fill the chamber. Lee
-=>Lee<=- Due to budget constraints the "light at the end of the tunnel" has been turned off!
