a bowl of soap and water and a rag squeezed out real good for the
outside.Any decals/numbers/letters on the dial,do not use any solvents
such as Windex or anything of that nature.Solvents will strip them
numbers off.Go very lightly with soap and water on any numbers/letters
on the dial and other areas.In fact,if they look ok,best to leave them
alone.
cuhulin