I am wondering what this tool is called? The wooden-handled thing with a metal tip the shape of half a heart. Please help! Thanks all!
Dunno, I have a few of them myself except mine have bakelite handles.
It's a ruling pen.
It is a folded ruling pen, you may purchase one here: http://www.johnnealbooks.com/prod_detail_list/13
I have several of these, the N30 and N45 are my favorites.
You can also make your own… : ) Eg with a piece of a soda can, etc.
Goggle for calligraphy and lettering tools…