Starrett 270 - Taper Gage
The Starrett 270 Taper Gage is a very useful tool, especially for bearing work and for gaging slots. The tool is made of quality tool steel and accurately tapered throughout the entire length for quick and convenient measuring. The gage can be used as a precision shim. One side graduated from 0.010 into 0.150in in thousandths of an inch; the reverse side from 0.3mm to 4mm in one-twentieth of an mm (0.05mm).