State system for ensuring the uniformity of measurements. Indicating pressure gauges. Ordinary measuring instruments. Metrological requirements and test methods
State system for ensuring the uniformity of measurements. The measuring of quantity of taken from bowels oil and oil gas. General metrological and technical requirements
Plugs and socket-outlets for household and similar purposes. Part 2-6. Particular requirements for switched socket-outlets with interlock for fixed electrical installations and methods of tests
