Box A Block Switch, wood, with brass fittings, LMSR type, usec to switch box A out of section between box T and box B. Located on model railway layout, gauge 1, Lancashire & Yorkshire Railway Signalling School, built 1912, by L&YR and Bassett-Lowke Ltd, with associated equipment. Lancashire & Yorkshire Railway Signalling School Model Railway Layout 1912
Block Switch, used to demonstrate the procedure of 'switching' the signal box in or 'out' of section; polished wood with brass fittings. Located on model railway layout, gauge 1, Lancashire & Yorkshire Railway Signalling School, built 1912, by L&YR and Bassett-Lowke Ltd, with associated equipment. Lancashire & Yorkshire Railway Signalling School Model Railway Layout 1912