What Is a Micrometer Screw?
A micrometer screw is a handheld device used to measure very tiny lengths and thicknesses. Examples of its measurements include the width of tubes or the thickness of a wire. Micrometer screws come in at least three different design variations, but they all use a finely calibrated screw to make accurate measurements. A micrometer screw can be calibrated to take several different kinds of units of measurement, which makes them useful in several different disciplines.