GOST 8.247-1977 State system for ensuring the uniformity of measurement. Sounding stick for oil product level measuring in transport and stationary reservoirs. Methods and means of verification
2004GOST 8.247-2004 State system for ensuring the uniformity of measurements. Sounding sticks for oil product level measuring in horisontal tanks. Calibration methods
1977GOST 8.247-1977 State system for ensuring the uniformity of measurement. Sounding stick for oil product level measuring in transport and stationary reservoirs. Methods and means of verification