Cardboard cutout of an old 1700s Grandfather Clock standing 72x15 inches. This type of clock is a freestanding, tall, weight-driven pendulum clock . It has cables or chains suspending weights to keep time. Occasionally, it must be calibrated to keep proper time. At the time, they were the most accurate timekeeping technologies...not counting the sundial...because a sundial certainly doesn't need calibration. You have a choice...pay thousands of dollars for a real one...or get a cutout!