Most models of engineering scales are available either in 4", 6” or 12” sizes, but larger engineering rulers are available from Alumicolor and Fairgate up to 24”. The scales for designing and reading engineering drawings units of measurement are in parts per inch and parts per foot. The triangular scales have graduations of 10, 20, 30, 40, 50, 60 parts per inch, but there are flat engineering rulers available even one with 1/32 & 1/50 full scale progressively double numbered. .
We also offer Architects Scales
and Metric Scales
plus Custom imprinted promotional products for architect, engineers, building trades industry schools please visit Promotional Products Store the source for custom imprinted products with a lasting value and long term presence.