A clip-on depth finder that is perfect for marking and adjusting the depth for slip floats and tip-up applications. For open water and ice fishing. Clip it on to your bait and let it go to the bottom. You can then adjust your float stop or bobber stop on your line to the exact place you want it, keeping your bait off of the bottom to our desired depth and always in the strike zone. A must-have for slip-float fishing.