Description
Johnson 12 inch architect’s rule features a solid aluminum frame and easy reading etched graduations. The tool’s 12 inch scale is divided in 3 inch, 1-1/2 inch, 1 inch, 3/4 inch, 3/8 inch, 3/16 inch, 3/32 inch, 1/2 inch, 1/4 inch, 1/8 inch per feet. This is an ideal tool for architects or professionals plans to scale.
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