Review on Fowler Micrometer 52 240 005 1 Measuring Graduation by Dave Hersma

Save money if you're looking for something that can handle tenths of tolerances. This mic was too bulky when taken out of the box. I've disassembled and cleaned of all dirt several times and worked the mic back and forth for hours, but it's still sticky. The only reason it gets 2 stars is the price and it will have a tolerance of +-0.001 inch. If you are a serious machinist, save your money and choose B&S, Starrett or Mitutoyo. The SPI mic was way better than this Fowler.)