It's called a Press Perfect Point 2 Point Turner, designed by Joan Hawley.
I've been using this Clover tool for quite a while to mark stitching lines. It puts a fine crease into fabric that I can follow with my machine, and I don't have to go back and remove an ink or pencil line.
I use a separate tool - a bone folder - with a point to turn and push out fabric to form points after sewing. It seems I'm always looking for one or the other while I'm working.
The tool I've been using is at the top. My new tool is the longer one in the bottom of this photo. It's about 7" long and has a point turner on one end and the creaser on the other. I'll be using it today, and I know it's going to work just great. 2-in-1!!! Could it be more convenient?
I admit it. I'm an unapologetic gadget freak. I think for Christmas this year, I'm going to ask Handsome for a tool chest for the studio. I might need a larger studio, too. Seriously.
Did you feel it? That faintest of breezes? That would be the Winds of Change. Come back tomorrow and I'll tell you all about it.