Tipping Egg / Sand Timer / Hourglass
This egg timer falls over when time is up and can also be re-set at any time. This is only a 30 second proof of concept model, but longer times would be possible if the design was tweaked to allow more sand and/or a smaller sand hole. The…
- Pobrania
- 393
- Polubienia
- 58
- Ocena
- 5





