![Fake History Hunter on Twitter: "So what is it, Roman or Medieval? ;) Curious though, what are the oldest sources for people using this nail in candle alarm clock trick? May research Fake History Hunter on Twitter: "So what is it, Roman or Medieval? ;) Curious though, what are the oldest sources for people using this nail in candle alarm clock trick? May research](https://pbs.twimg.com/media/FnvYasRWYAAU_UX.jpg)
Fake History Hunter on Twitter: "So what is it, Roman or Medieval? ;) Curious though, what are the oldest sources for people using this nail in candle alarm clock trick? May research
Best Coast Candle Company - Before the invention of modern alarm clocks, there were candle clocks from ancient China that functioned similarly to an alarm clock or a timer. As the wax
![An example of a medieval candle clock. People would hear the nail hit the ground, letting them know a certain amount of time had passed. These were used mainly by the rich, An example of a medieval candle clock. People would hear the nail hit the ground, letting them know a certain amount of time had passed. These were used mainly by the rich,](https://preview.redd.it/an-example-of-a-medieval-candle-clock-people-would-hear-the-v0-y7pw3x8e0vea1.jpg?width=640&crop=smart&auto=webp&s=dc13cc34a110edba054c214a641ca1330197ef31)