BS 350:2004

Committees responsible
Foreword
1 Scope
2 Number
3 Length
4 Area (length squared)
5 Volume and capacity (length cubed)
6 Modulus of section, first moment of area
7 Second moment of area, or geometrical moment of inertia
8 Plane angle
9 Solid angle
10 Time
11 Linear velocity (speed) (length/time)
12 Angular velocity (angle/time)
13 Frequency (number/time)
14 Acceleration (length/time squared)
15 Mass
16 Mass per unit length (or lineic mass) (formerly linear density)
   (mass/length)
17 Mass per unit area (areic mass) (mass/length squared)
18 Specific surface, or area per unit mass
19 Area per unit capacity
20 Density (volumic mass), (mass/volume)
21 Mass concentration (mass/volume)
22 Specific volume (volume/mass)
23 Mass rate of flow (mass/time)
24 Volume rate of flow (volume/time)
25 Traffic factors
26 Moment of inertia (mass x length squared)
27 Momentum (linear) (mass x velocity)
28 Angular momentum (mass x velocity x length)
29 Force (mass x acceleration)
30 Weight
31 Moment of force, or torque (force x length)
32 Force per unit length (force/length)
33 Pressure (force/area)
34 Stress (force/area)
35 Viscosity, dynamic (stress/velocity gradient)
36 Viscosity, kinematic (length squared/time)
37 Energy (work, heat, etc.)
38 Power (energy/time)
39 Temperature, including temperature difference or interval
40 Specific energy [(energy or heat)/mass]
41 Heat content, volume basis (heat/volume)
42 Specific heat capacity [heat/(mass x temperature interval)]
43 Specific entropy [heat/(mass x thermodynamic temperature)]
44 Heat capacity, volume basis [heat/(volume x temperature interval)]
45 Heat flux density [heat/(area x time)]
46 Thermal conductance (heat transfer coefficient)
47 Thermal conductivity [heat x length/(area x time x temperature
   difference)]
48 Thermal resistivity [area x time x temperature difference/(heat x
   length)]
49 Heat release date (e.g. as used in connection with furnaces)
   [heat/(volume x time)], or (power/volume)
50 Thermal diffusivity (area/time)
Annex A (informative) Commentary on imperial and metric systems
        of measurement and units
Index of symbols and abbreviations
Index of terms
Bibliography

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.

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.

NOTE1 SI units are normally recommended. However, in certain circumstances use of particular units is required by legislation.

NOTE2 Electrical and light units are given in BS5775‑5 and in BS5775‑6, respectively.

NOTE3 A commentary on imperial and metric systems of measurement and units is given in Annex A.