OpenLegislation

Division 4 UNITS AND NAMES OF UNITS PERMITTED IN SPECIALIZED FIELDS ONLYX1

United Kingdom

Original text. Later amendments are not shown.

Quantity Unit
Name Symbol Value
Vergency of optical systems dioptre* 1 dioptre = 1 m -1
Mass of precious stones metric carat 1 metric carat = 2 × 10 -4 kg
Area of farmland and building land are a 1 a = 10 2 m 2
Mass per unit length of textile yarns and threads tex* tex* 1 tex = 10 -6 kg · m -1
F1Blood pressure and pressure of other body fluids Millimetre of mercury mm Hg(*) 1 mm Hg = 133,322 Pa
Effective cross-sectional area Barn b 1 b = 10 -28 m 2
  1. Note:

Annotations

Textual amendments

F1

Inserted by Council Directive of 18 December 1984 amending Directive 80/181/EEC on the approximation of the laws of the Member States relating to units of measurement (85/1/EEC).

Editorial notes

X1

Substituted by Corrigendum to Council Directive 80/181/EEC of 20 December 1979 on the aproximation of the laws of the Member States relating to units of measurement and on the repeal of Directive 71/354/EEC (Official Journal of the European Communities No L 39 of 15 February 1980).