Placing Rail Served Industries On Layout Edge

[torikoos]

If you switch to Sergent's couplers, you can't use an under track uncoupling magnet. The Sergents use a hand held magnet ABOVE the coupler to pull the locking ball up, rather than moving a "hose" sideways.

That's what I thought, only their tool will do the job, which will make industries with tracks INSIDE a building a lot trickier to work with due to access. It is a consideration to make when you are planning something like that.