Cardboard cutout of a white Bornholm Grandfather Clock standing 72x23 inches. The grandfather 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!Image used is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. We give appropriate credit to wikipedia user Mogens Engelund, provide a link to the license, and indicate that image distortion were applied to make it a cardboard cutout. Licensor does not endorse us or our use. https://creativecommons.org/licenses/by-sa/3.0/deed.en