Sauter tf and tg coating thickness meters sauter tg 1250 01fn the sauter tg1250 01fn coating thickness meter is a premium thickness measuring device for paint coatings lacquer coatings etc it has an external sensor that plugs into the meter housingin f mode the meter measures the coating thickness of non magnetic materials eg paint plastic porcelain enamel copper zinc aluminium chrome lacquer layers etc that are located on magnetic metals eg steel iron nickel etc app