Cross References: BS 1339-1 BS 1339-2 ANSI/ASHRAE 41.6:1994 BS 2842:1992 BS 5248:1990 BS 5844:1980 ISO 5168:1978 BS EN ISO 9000:1994 BS EN 30012-1:1994 BS EN ISO 17025:2000 ISO 4677-1:1985 ISO 4677-2:1985 BS 5781-1:1992 ISO 10012-1:1992 OIML Recommendation 121 94/9/EC VIM:1993