Ideal for use in the drafting room, engineering department or small shop.
Features
• Made from solid electroformed nickel
• Markings in AA (microinches) and metric in Ra (micrometers)
• Each type of surface finish is truly and consistently reproduced to give the operator a realistic idea of the feel, appearance and texture of the machined component
• Conforms to S.A.E. and military specifications for visual and tactile inspection
• Set contains 30 Specimens, each 7/8" x 3/8"
