Rectangular weld moulding boxes of cast steel elements having inside dimensions: length from 600 to 900 mm, width from 500 to 700 mm, height from 125 to 400 mm. Construction and dimensions
State system for ensuring the uniformity of measurements. State special standard and all-union verification schedule for means measuring absolute pressure within the range of 1x10 in minus 8 degree up to 1x10 in 3 degree Pa