
The LNWR Bescot Train Control as seen circa 1912, The controllers would be in constant contact with the 60-odd signalboxes on the route, and manually mark the positions of trains on the 20-foot diagram using brass pegs placed in sockets at the relevant locations, similar to what a power box displays electronically these days.
Bescot Yards comprised 52 "roads" back then and can be seen in the centre of the diagram with Walsall above it. New St is at lower right (between the desks).
From a photo by W E Hall.