After the Second World War ended, many armies looked at addressing the problem of identification on the battle field. The British Army made a decision to expand its
programme of recognition training, and so commissioned an expansion of its training aids.
The industry accepted scale at that time was 1:96 or 8 feet to 1 inch. This was used by manufacturers, such as Denzel Skinner and Miltra, who supplied the Army with their
vehicles, starting around the early 1960s. With the introduction of the metric system into the UK, and continued international interchange of information, the British Army
recalibrated its sighting and scaling systems to the currently used scale of 1:100. The manufacturers, consequently, rebuilt to these new specifications.