GROUND FRAME
A small frame placed at ground level to operate railway points and/or signals, typically controllong exit and/or entrance from and to local sidings off a running line. These are operated by rodding and/or wires. Such a frame is essentially a smaller version of the frame within a manual signal box, but does not have any interlocking, protection being provided by a key or other security device.
Lever Frame (Non-Preferred)
