Loading... Please wait...Art No: 0313.72I - No 405 12 inch Imperial Verulam Architects Scale Rule 12 inch, 1/8 inch, 1/4 inch x1/2 inch,1 inch=1ft, 3/8 inch, 3/4 inch x 1 1/2 inch, 3 inch = 1 ft (Armstrong 12ths).
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