... the outside of the running rails in the bottom left corner? Hi Jim, They appear to be single-blade catch points, acting as traps. In the case of the leftmost two, it is not clear how they would work with check rails opposite them. Keith Norgrove has made the same point when I posted this pic on RMweb. Unfortunately we can't see the full detail closer to the camera. regards, Martin. posted: 5 Mar 2017 13:12 from: Martin Wynne Another 4-way turnout: 2_050807_420000000.jpg Location unknown, but probably in the same area as they are both from the same book (Hepworth& Lee, Manchester, 1922). In this case a single-sided treble with the main road on the right. Somewhat simpler than the Pemberton one -- in this case the 3rd switch is beyond the first crossing. Thus needing only 5 crossings compared with 6 crossings at Pemberton. And 3 crossings in an ordinary double (tandem) turnout. regards, Martin. posted: 5 Mar 2017 13:30 ...