![Image](http://i.imgur.com/REJt3MR.png)
This mod adds a single new block type: a sounding line on a spool. When built over empty space the line can be used to measure how far down the surface of the water below it is (if any) and how far down the first solid obstruction is below that. It can also detect and report the surface of lava but it cannot tell how deep the lava is.
This is a handy item to have when considering whether to leap into an abyss that may or may not have liquid at the bottom, to determine how much ladder or rope is needed to reach the bottom of a hole, and so forth.
License: LGPL 2.1 or later
Author: FaceDeer
Links
Recommended mods: Ropes