Fish Finder
A battery sonar with a transducer on a lead. Use it to switch it on: depth, bottom, water temperature, and the arches of fish under a boat or off the end of a pier.
Crafting
Tools (not used up)
Where to find it
Found in
Car wreckTrunk
What it is for
Salvage
Taking it apart at a recycler gives: It takes 2.9 seconds.