I am not really into dingbats and, honestly, do not feel like spending a few hours on trying to find things that might fit what you have in mind. I found one though that has a scale, the signs2, which has a scale at hex 69 (Alt +105), the lower case i.
I'm looking for a symbol that would indicate "extra weight," like a scale. But it needs to be a font and not a graphic. I have searched the Web extensively for symbol fonts and haven't found anything. Does anyone know of such a thing?