1993GOST 10374-1993 Direct acting indicating analogue electrical measuring instruments and their accessories. Part 7. Special requirements for multi-function instruments
1985GOST 4.376-1985 Product-quality index system. Combination analogue electrical measuring instruments. Index nomenclature
GOST 4.376-1985 Product-quality index system. Combination analogue electrical measuring instruments. Index nomenclature was changed to GOST 10374-1993 Direct acting indicating analogue electrical measuring instruments and their accessories. Part 7. Special requirements for multi-function instruments.