Alvin 300 Series 12 inch Architect Aluminum Triangular Scale

High-quality solid aluminum scales. Printed calibrations on a durable ultra-smooth surface that resists stains and abrasions. Color-coded furrows. 12" scale with standard architect graduations of 3/32 3/16 1/8 1/4 1/2 1 3/8 3/4 1 1/2 3" to the foot; one edge in 16ths.