Lufkin- Mason Folding Rule- 6'- 636

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Lufkin Model 636, Mason Folding Rule, 6' Easy and fast to use by bricklayers. Graduated vertical inches to 1/16ths, both edges. Brick Mason's scale on inside, red course counters numbered consecutively. Regular outside markings in black. WOOD - BRICK MASON'S - ''RED END'' W.Ins. x Lgth. Ft.=5/8 x 6

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