colour coding• Insulatedwires should be used for this purpose, and colour coding will avoidconfusion.• Well Spear & Jackson has found a way to solve that problem - by colour coding its range of screwdrivers.• There are also different colour coding systems in operation in different parts of the world.• For example, V4 in rhesus monkeyscontains a very high density of colour codingcells that are unresponsive to white stimuli.• The colour coding was linked to differently shaped symbols for different types of material.• Some places use colour coding to tell people where different things are.