$2.20 (as of 24/04/2018 21:03 PDT details )
Features:
- 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 62 Rockwell c scale Rc cold stabilized for durability
- Class ZZ tolerance of .0002 for longer wear