This site works best with JavaScript enabled. Please enable JavaScript to get the best experience from this site.
SNS
SNS
or
SNS
NSN
NSN
Depending on how the design is done.
It would be a normal tool. Right clicking it would allow it to tell you (somehow) if there was a water source block up to 15 blocks below it or not. It would also take wear.
Simple. Fun. Brilliant.