Does anyone know what temperatures the various settings mean on the temperature control dial of an iron? My present iron (a Shark, which I despise) only has one, two, or three dots to represent the temperature settings. I have various types of iron-on stabilizers and interfacings that specify using a certain temperature in degrees or on "wool" setting, etc. I need to patch a winter coat, and don't want to melt the coat while repairing it.