I can't take credit for this one cause I read it on the FML a year or so ago. I purchased a Stren fish scale from Wal-Mart for under $30. It's handheld with a hook, and measures in pounds and ounces. I simply put the ferret in a plastic grocery bag and hang from the hook for a moment. I get pretty darn accurate readings. Shelly (SC Ellis-Blackwell) [log in to unmask] [Posted in FML issue 2551]