A recent visit to Glasgow revealed two electro mech. type Banner signals outside Eglington Tunnel. They were of the lower quadrant type, not used to coming across lower quadrant type. Were all mechanical type lower quadrant in the former Scottish region?
Banner signals found on the eastern region were generally upper quadrant and even on the western region upper quadrant was found, for example signals OO 139R and OO 142R. When a Banner signal from the regional workshops was requested I wonder if what was supplied was what was available? What type was found on the LM and SR?
The electro mech. type are being replaced with fibre optic type. I wonder what is the total number of electro mech. types left working, discounting modern miniature electro mech. types.