BS 350:2004

• 17.020 Metrology and measurement in general
• 01.060 Quantities and units

This standard provides conversion factors for units of measurement for a number of quantities, which are, or have been, in general use in engineering, industry and trade. The subjects covered are, broadly, metrology, mechanics and heat; the standard does not deal with purely electrical units.

NOTE 1 SI units are normally recommended. However, in certain circumstances use of particular units is required by legislation.

NOTE 2 Electrical and light units are given in BS 5775‑5 and in BS 5775‑6, respectively.

NOTE 3 A commentary on imperial and metric systems of measurement and units is given in Annex A.