National Measurement Regulations 1999

1.1

length

inch

in

0.9144/36 m

1.2

length

foot

ft

0.9144/3 m

1.3

mass

troy ounce

oz tr

480 × 0.453 592 37/7000 kg

1.4

power

horsepower

hp

745.7 W

1.5

pressure

millibar

mb or mbar

100 Pa

1.6

pressure

millimetre of mercury

mmHg

133.322 19 Pa

1.7

velocity

foot per minute

ft/min

0.3048/60 m/s

1.8

work and energy

kilocalorie

kcal

4.1868  103 J

1.9

concentration

Degrees Brix

ºBx

concentration in grams of solute per 100g of an aqueous solution of pure sucrose, having the same density as a sugar solution at the same temperature

1.10

concentration

Degrees Z

ºZ

concentration equivalent to 0.26g of sucrose per 100g of an aqueous solution of pure sucrose

1.11

concentration

Pol

Pol

concentration in grams of solute per 100g of an aqueous solution of pure sucrose having the same optical rotation as a sugar solution at the same temperature

1.12

mass concentration

grams of alcohol per 210 litres of exhaled breath