For use with . Clear plastic Series “P” scales offer a clear view of the drawing beneath. Graduations and numbers are on the underside of the scale to eliminate parallax distortion. A raised rib protects graduations and prevents capillary action when inking. 12 in. and 18 in. AP-80 straight edges feature clear acrylic edges on an aluminum spine, with a stainless steel cutting edge on one side. All other scales are solid, clear acrylic.P-22: SIDE A: 1/16 in. to 1/32 in.; SIDE B: 1/25 in. to 1/50 in.P-41: SIDE A: 1:1 to 1mm; SIDE B: 1:2 to 1mmP-62: SIDE A: 1:1 to 1mm; SIDE B: full size to 1/32 in.AP-80: SIDE A: full size to 1/32 in.; SIDE B: 6 and 12 pt. pica.

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More info: Vemco Scales and Straight Edges 12 in. AP-80 straight edge