James May used it on Manlab, you feed wood through and it makes it an exact size. I'd like to get one but I don't know what to search for. So far I have found nothing like it.
Oh yes. I have one. But beggared at the moment due to missing a hidden nail when I fed one piece of wood through,;only to find the model no longer made and spares not supplied. So, be careful if you get one.