John: I bought one that looks just like that from: http://www.voltagestandard.com/ It looks and works just fine as far as I can determine. 73 Gordon WA4FJC ======================================== Date: Mon, 12 Aug 2013 07:11:36 -0700 (PDT) From: "J. Forster" <jfor@quikus.com> To: "Discussion of precise voltage measurement" <volt-nuts@febo.com> Subject: [volt-nuts] Calibration Device Message-ID: <37087.12.226.214.5.1376316696.squirrel@popaccts.quikus.com> Content-Type: text/plain;charset=iso-8859-1 David mentioned this: http://www.ebay.com/itm/281149723636 What do people think of the device? Is it available direct from the seller, and, if so, does anyone have the contact address? Thanks, -John