A long time staple of the Brown & Sharpe line, this caliper set traces its ancestry back to 1851 when J R. Brown invented the first vernier caliper. This set is not that old, and is in great condition. It reads to thousandths of an inch and is designed to make direct inside readings on one side, and outside readings on the other. The graduated scale is 7 inches long. An owner has very ornately stamped his name on the tool. It is such a piece of work that it actually enhances the tool. Fine.