A good friend of mine gave me this. And I have no idea what it is or what it's used for. I would like to know more about this tool if you guys know anything about it.
Ultimate Micrometer
No. SKM-2D
The Ultimate Micrometer allows for precise measuring of depths of cuts. The easy to see digital display gives accurate readings in thousandths of an inch, without eye strain. The SKM-2D is satin chrome plated with heavy duty construction for years of service. It includes a genuine leather case with snap closure.
Yeah that's crazy! Foley-Belsaw has them for $20. I'm a locksmith, and I have the foley-Belsaw mic, but I usually just use regular dial calipers when U measure key cut depths. HPC does make quality tools though.