State system for ensuring the Uniformity of measurements. State verification schedule for measuring instruments of alternate electrical voltage to 1000 V in the frequency range from 1·10-2 to 2·10-9 Hz
Rectangular all-cast moulding boxes of aluminium and magnesium alloys having inside dimensions: length 800; 900 mm, width from 500 to 700 mm, height 150; 200 mm. Construction
