Utility Micrometer, Practical & Economical Measuring Device For Beginners & Hobbyists, Well Suited For Use In Training Programs, General Toolroom & Machine Shop Use & Automotive Work, Accuracy Guaranteed To .001", Satin Finish Frames Have Friction Thimble To Per MIT Consistent Measurements, Hex Wrench Is Included For Simple Zero Adjustments, Machine Cut Graduations, Range 0" To 1".