Large Lettering Aid SKU - R924 Size - Contains 1/8", 5/32", and 1/4" sized slots for freehand lettering or drawing guide lines. Can be used to draws full width lines on 8-1/2" x 11" paper with margin spacing as needed. Guide lines are for equidistant spacing. Inch and cm scales included. Made of durable, translucent green plastic in the USA.