GOST 18908.12-81

State system for ensuring the uniformity of measurements. Measurement microphones. Primary method for free-field calibration of laboratory standard microphones by the reciprocity technique

Coals and anthracites. Method for the determination of thermal stability

Heating boilers. Part 2. Heating boilers with forced draught burner. Special requirements for boilers with atomizing oil burners

Straight turning undercutting and coping toolholders with indexable inserts. Types and dimensions

Microcalcite. for construction materials. Specifications

Mechanical protective constructions and electromechanical protective constructions for doorways and windows ventings. Technical requirements and test methods for breaking resistance