Why Your Shop Needs a Sunnen Dial Bore Gage
You really can't beat the reliability of a Sunnen dial bore gage when you're trying to measure a cylinder bore to within a tenth of a thousandth. If you've spent any time in a machine shop or an engine building room, you know that the difference between a motor that runs for a decade and one that blows up on the first pass usually comes down to a few ten-thousandths of an inch. It's that tiny margin where things either fit perfectly or they just don't. ...