Information technology. Telecommunications and information exchange between systems. High-level data link control (HDLC) procedures. Classes of procedures
State system for ensuring the uniformity of measurements. State verification schedule for measuring instruments of length in the range from 1·10-9 to 50 m and wavelength in the range from 0, 2 to 50 mkm
State system for ensuring the uniformity of measurements. Industrial application level gauges and float-type level gauges. Methods and means of calibration
