State system for ensuring the uniformity of measurements. Diamond indenters of the hardness testing machines for metal and alloys. Verification methods and means
Safety of household and similar electrical appliances. Particular requirements for frying pans, deep fat fryers and similar appliances and test methods
Low-voltage switchgear and controlgear. Part 5-4. Control circuit devices and switching elements. Method of assessing the performance of low-energy contacts. Special tests
