Earthly Mission candle alarm from ancient rome 440941028_736813032001520_8468959892338199127_n.jpg

Amazing Archaeological

Before alarm clocks existed, people used nails fixed onto candles to make sure they would wake up on time. They knew how to calculate the burning time and put the nail at the right position. As the candle melted, the nail fell, made a noise and woke up its owner.
Image credit: Earthly Mission
Simple candle alarm clock design from Ancient Rome. It has two snoozes apparently.