For generations, Anglophone countries, such as Australia, used the imperial system of measurements which included feet and inches. In picture framing, for photo frames and picture frames, inches were the most commonly used unit of measure. So picture frames were known, made and sold in sizes such as 8"x10" , 11"x14, 20"x30", etc. Beginning in 1970, Australia metrication gradually supplanted the imperial system and large scale conversion across the paper, printing, photographic and allied industries  industries such as picture framing began. There are many powerful reasons why ...