GOST 8.038-1975 State system for ensuring the uniformity of measurements. State primary standard and all-union verification schedule for means measuring pressure in the air
1994GOST 8.038-1994 State system for ensuring the uniformity of measurements. State verification schedule for means measuring the airborne sound pressure in the frequencys range 2 Hr -100 kHr
1975GOST 8.038-1975 State system for ensuring the uniformity of measurements. State primary standard and all-union verification schedule for means measuring pressure in the air