Ultrasonic domestic gas meters
Heat meters - Part 1: General requirements
Heat meters - Part 2: Constructional requirements
Heat meters - Part 4: Pattern approval tests
Heat meters - Part 5: Initial verification tests
Electricity metering equipment (a.c.) - Part 3: Particular requirements - Static meters for active energy (class indexes A, B and C)
53,361 distinct reference strings indexed from official source snapshots accessed on 19 October 2026. Includes earlier editions. The index and publisher collections have different coverage. See sources and coverage.