RULERS
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Rulers, printers line gauges, metric rulers, halftone screen determiners, proportion scales, type gauges, desktop publishing tools, protractors, glide liners, t-squares, stainless steel straight edges, steel triangles, magnifiers, optical tools, linen testers, type size finders, magnifier lamps, light tables, dial thickness paper gauges, calipers, micrometers, scissors, art tools, ect.
