Model signal frame, 1:12 scale, Sykes lock and block signal frame, 12 lever frame, as used on the London Chatham & Dover Railway, c. 1885. model of sykes lock and block signal frame
Model signal frame, 1:2 scale, Saxby's rocker-locking signal frame, six lever, 1871. Model of Saxby's six lever rocker-locking signal frame 1871
Model 6 lever McKenzie and Holland Cam and Tappet signal locking frame 1887 (scale 1:4). Model 6-lever Mckenzie & Holland signal frame 1887
Model signal frame, scale 1:3, 12 lever interlocking frame, Stevens' system. model of 12 lever signal interlocking frame
Model signal frame, 1:2 scale, Saxby & Farmer hook-locking signal frame, nine lever, 1867. Model of nine lever Saxby & Farmer hook-locking signal frame 1867