Perfect gaging in an imperfect world

It is certainly not news that, more and more, dedicated gages are being placed at the point of manufacture. Tight-tolerance measurements that were once performed in a semiclean room by a trained inspection technician are now being done right next to the machine, often by the machinist. But just because shop floor gaging has become commonplace, doesn't mean that just any gage can be taken onto the shop floor. To assure good gage performance, there are a number of specifications and care issues which need to be addressed.