Posts : 15751 Join date : 2009-08-25 Age : 48 Location : New Jersey
Subject: Incredibly accurate 240 year old pendulum clock Tue Jun 23, 2015 2:56 pm
Hey everyone, check this out. It's a clock made from John Harrison's 240 year old plans by clockmaker Martin Burgess. The pendulum clock was designed to be accurate to within a second over a 100 day period, and would use no lubrication in doing so.
After it's completion, the clock was tested for 100 days, and was only 5/8 of a second off. It even could measure barometric pressure, and was 96% accurate with that.