GOST 7169-66

Diamond needles for surface roughness measurements. Technical conditions

Level gauges with shut-off device. Types and parameters

Low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 6. Residual current operated protective devices in TT, TN and IT systems

Ores and concentrates of non-ferrous metals. Size analysis and sedimentation methods for the determination of size distribution

Basic norms of interchangeability. Taper screw thread of valves and gas cylinder

Hard coal and coke. Mechanical sampling. Part 5. Coke. Sampling from moving streams