12 in. x 12 in.
The sound that you hear when you touch two screws (the Buddhist mantra OM) is a recording made on an electronic circuit taken from a "record your own message" greeting card.
"...Tuck took the Hallmark idea of talking greeting cards. But instead of a message, a visitor touching the card hears the humming of a Buddhist priest." Annie Nakao, The San Francisco Examiner.
ohm has been exhibited in the Art Machines Exhibition