• Supplied with a certificate of accuracy traceable to National Institute of Standards and Technology (NIST)
• No-go (-) gage for measuring the upper limit of a hole
• Available in a range of sizes from .0040” to 1.0005”
• Made from tool steel 60/64 Rockwell c scale (Rc) cold stabilized for durability
• Class ZZ (tolerance of .0002”) for longer wear