... 1digital regis DMM28 (DD28) single phase mechanical kilo watt-hour meter is applicable to measure 50 Hz or 60 Hz active ... IEC62053-11. FUNCTIONS AND FEATURES:1. The meter has separable iron core structure;2. Meter cover glass, plastic, transparent PC which ... , or bakelite with glass window (optional); Meter base Aluminium, steel, bakelite etc; Meter terminal block is made of quality bakelite material ...