CGR-3
3.5"x3.5" square ruler features easy-to-read black and white markings printed in 1 inch grids marked in 1/8 and 1/4 inch increments .
CGR-312
6.5" x 12.5" rectangle ruler features easy-to-read black and white markings printed in 1 inch grids marked in 1/8 and 1/4 inch increments .