It sounds like you’re referring to some kind of measurement or gauge system, possibly related to an ECM (Engine Control Module) in a vehicle. If you’re looking for a short word or acronym for “Friends Meter & Radiator” or “Radiator Meter ECM D,” you might consider something like “FMR” for “Friends Meter & Radiator” or “RMECM” for “Radiator Meter ECM D.” If you have more context or specific details, I could help refine it further!