A woman is working on an audio tape recorder in the laboratory of electronic equipment, which was built by Jeltens at T Penrose in London in early monochrome photography. The main object she works with it is inside its wooden case and has four small rings around it that could be used to hold it down. It’s set up on top of her desk where there’s also another two large tape recorders sitting next to each other. One of them has three buttons attached on one side.