Adjustable Triangular Scale Aluminum Architects Ruler, 12" Long, Silver

Versatile design lets architects work with maximum efficiency. Change units by rotating dial at either end of scale without moving scale from work surface. 12" measuring length, 1/32" scale. Exact calibrations. Highest quality aluminum. Adjusts to 1/16, 1/8, 1/4, 1/2, 1:1, 2:1 and 32.