- Mechanicsville, Virginia, United States
- Jan 30th
A combination stainless steel ruler and reference chart table. The front features a 6" long ruler and a chart of the decimal equivalents of fractional 1/64" from 1/64 to 63/64". The back features a reference table and formulas for drill and tap sizes for a variety of threads including U.N.F., Metric ISO, U.N.C., American Standard Pipe, etc.