GOST 8.550-1986 State system for ensuring the uniformity of measurements. State special standard and state verification schedul for means of measuring sinusoidal current ratio
This standard applies to the state special standard and the state verification scheme for measuring instruments
GOST 8.550-1986 history
1986GOST 8.550-1986 State system for ensuring the uniformity of measurements. State special standard and state verification schedul for means of measuring sinusoidal current ratio