Requirements for instruments intended for measuring analogue quantities of voltage and/or current. Such instruments will also measure non-electrical quantities provided the relationship between the indicated quantity and the measurand is known.Cross References:BS 89BS 2011:Part 2.1EaBS 2011:Part 2.1FcBS 3939BS 4727BS 4743BS 5458BS 5685:Part 1BS 5775:Part 5BS 6217BS 6667