OK, I can work out that (from left to right) the 10BA nut runner is worth it's weight in gold if you want to take the loco apart, that the nuts and bolts could be useful sometime and that the Hex wrench is for removing the knob from the regulator...
but what is the T-piece for??
Yours,
Mystified of Crawley Down
but what is the T-piece for??

Yours,
Mystified of Crawley Down
