I have except in Making off's never seen a clapperboard. These clapperboard is exactly represent what I imagine including. One can for his film all the necessary things draufschreiben (preferably chalk). The materials used are wood and some metal. There is a nice bang when it strikes. Was to synchronize the sound with the image properly with me no problem. Beautiful and expensive would obviously digital, but honestly that's not at all as nice oldschool.
5 stars for a low-priced and right moviemakers useful tool!