MR series (1963 to 1969) Previous
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Following the introduction of the magnetic bearings on the MQ singlephase meter, the MH (transformer-rated) and ML (self-contained) polyphase meters were redesigned to incorporate magnetic bearings, and all other characteristics of these meters (including the different full-load speeds) were retained. Also, on the transformer-rated versions, the voltage indicators were finally abandoned in favor of the low-wattage bulbs long used by the other manufacturers. MR-2S
Photo by David Dahle