| AC | alternating current |
| ASTM | American Society for testing Materials |
| Bq | becquerel |
| C | degree (s) Celsius |
| cc | cubic centimetre(s) |
| cg | centigram (s) |
| cm | centimeter(s) |
| cm2 | square centimetre(s) |
| cm3 | cubic centimetre(s) |
| cN | centinewton(s) |
| DC | direct current |
| g | gram(s) |
| Hz | hertz |
| IR | infra-red |
| kcal | kilocalorie(s) |
| kg | kilogram(s) |
| kgf | kilogram force |
| kN | kilonewton(s) |
| kPa | kilopascal(s) |
| KV | kilovolt(s) |
| KVA | kilovolt(s) – ampere(s) |
| Kvar | kilovolt(s) – ampere(s) – reactive |
| KW | kilowatt(s) |
| 1 | litre(s) |
| m | metre(s) |
| m- | meta- |
| m2 | square metre(s) |
| nCi | microcurie |
| mm | millimetre |
| mN | millinewton(s) |
| MPa | megapascal(s) |
| N | newton(s) |
| No. | Number |
| o- | ortho- |
| p- | para- |
| t | tonne(s) |
| UV | ultra-violet |
| V | volt(s) |
| Vol. | volume |
| W | watt(s) |
| % | percent |
| xo | x degree(s) |