How did grandfather clocks—also known as tall-case, longcase, coffin, hall, standing, upright, long, or floor clocks—get to be so tall? Simple: A grandfather clock had to be six to nine feet tall to contain its three-foot-long pendulum, as well as its weights, which needed to drop several feet for the clock to run a full week. While smaller lantern or house clocks were widely used in England before pendulum or regulator clocks were first...Continue Reading