Just checked and mine doesn't have a brand name on it. It came in a blue plastic hinged case with a dropper and mini screw driver for calibration. It says that it is ATC (automatic temp control) for field use and has a model no. of RHS-10ATC. Here is an ebay link http://cgi.ebay.com/Portable-Refrac...yZ117435QQssPageNameZWDVWQQrdZ1QQcmdZViewItem and this is just what mine looks like...but at the time I did this this one was only $14.00.