Measurement usually involves recording the size or length of something, but almost anything can be measured - electrical current, temperature or force for example. Each of these have their own units - electrical current in amps, temperature in degrees Celsius and force in newtons. Accurate measurement is an essential part of undertaking scientific investigations. You will have used many different types of measuring equipment in your lessons. Measuring beakers, meter wheels and stopwatches - these are all pieces of equipment used to measure things.