The 50 Best Movie Posters Ever | Movies | Empire - Striped board used in movie making
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A clapperboard is a device. A clapperboard is a device used in filmmaking and video production to assist in synchronizing of picture and sound, and to designate and mark the various scenes and takes as they are filmed and audio-recorded. Other names include clapper, clapboard, clacker, slate, slate board, In recent years sticks with calibrated color stripes have become available.