Before I joined the 'london underground' environment, I had quite a lot to do with non railway control rooms e.g. electric grid, power station, and emergency services, and worked through a generation of kit pre-dating LED LCD etc, GB and overseas.
Neasden SCC pre-TBTC desks were KME monitors - marine specification !!! Don't ask !! I just remembering when procuring some replacements reading the spec - as if we were placing them on the outside of 96TS in the monsoon season.