One advantage of BOLTSORTER over the competition is that by laying the bolt into it's TPI & diameter slot you avoid stripping out threads. This is a problem with the full thread sorters--often imported bolts are of such poor tolerance they will start a stripping of the sizer.
The History of the BOLTSORTER:
Who Exactly Would Love the Boltsorter?
Who could use this awesome tool today?
The Boltsorter was born from a precision tool and die maker to make thread identification easier. Combined with modern precision toolmaking capabilities, including conventional electric discharge machining and laser engraving, to create a highly detailed and precise mold cavity. The Boltsorter gives a locked in feel when the correct size is matched. It separates standard (SAE) threads from Metric.
There is nothing else like it on the market. If you have ever second guessed yourself on a thread size, the BOLTSORTER is for you!