Fowler Electronic Screw Thread Micrometer Specifications include... 0-1" / 25mm Measuring Range 0.00005" / 0.001mm Resolution + 0.00008" / 0.002mm Accuracy 64 - 5 TPI / 0.4 - 5mm Thread Range Features include... 60° Measuring Anvils IP65 Rated Protection Heat Insulated Frame Friction Thimble Supplied in fitted case