Inches? I'm not that impressed.
(I kid, all the best to this young man.)
The obvious flaw; I have 1 pencil (his ruler pencil) and I want to measure something. I need to mark the location (with precision) but... pencils don't bend? The idea is theoretically great but I can't see it being practical. It's cute though, good luck to him :-)
Ya - but they weren't 'invented' by an 11 year old with a crazy younger sister and a belief in his ability to conquer the world that only a preteen can have ...
That's marketing you can't buy ...
That's not the point of it. Of course it already exists, who cares? I think his movie is genious. Let him get some entrepreneurial experience.