ALVIN - High quality black anodized aluminum scales have a large profile, hollow core and tapered edges. Printed white graduations and color inlaid furrows. Supplied in hard plastic case. Graduations: 3/32, 3/16, 1/8, 1/4, 1/2, 1, 3/8, 3/4, 1 1/2, 3" to the foot.