The movie clapper, also called a clapperboard, clapboard, or slate board, is a regular-sized clapping board with dimensions of 7' X 8'. It's an essential tool for film and video production, helping to synchronize audio and video.

To use this movie clapper board, simply open it up and write the scene number, take number, and other relevant details on the slate. Then, hold it in front of the camera and clap the sticks together at the start of the shot. This will create a clear visual and audio cue for syncing. When not in use, store it in a dry place to prevent warping. Wipe it clean with a soft, dry cloth if it gets dirty. Avoid dropping it or subjecting it to rough handling to keep it in good condition.