110P - Plastic Architect (NOT Color Coded) Graduated: 3/32, 3/16, 1/8, 1/4, 1/2, 1, 3/8, 3/4, 1-1/2, and 3" to the foot.
111P - Plastic Engineer Series (NOT Color Coded) Graduated: 10, 20, 30, 40, 50 and 60 parts to the inch.
240 -Series Architect (Color Coded) Graduated: 3/32, 3/16, 1/8, 1/4, 1/2, 1, 3/8, 3/4, 1-1/2, and 3" to the foot. Available in Black or White
241 Series Engineer (Color Coded) Graduated: 10, 20, 30, 40, 50 and 60 parts to the inch. Available in Black or White