METERING-UNIT No. 2 - Used on Coin Box Plan No. 5E METERING-UNIT No. 3 METERING-UNIT No. 4 - Subscribers metering on PABX No. 1 and No. 7 METERING-UNIT No. 5 - 10 meters, rack mounted, for Telespot UNITS, METERING No. 1 - Used on PMBX No. 1A
