Digital Micrometers

Looking for more information on the digital micrometer? Look no further than this spot where all and more will be explained. A micrometer, commonly used in the manufacturing environment is a tool used for the precision measurement of machines in the mechanical engineering industry. A digital micrometer does everything a regular one does with an electronic read out screen.

Digital Micrometer

The operating principles on a basic level of a micrometer come in two parts. Firstly the micrometer works in terms of a screw in principle – where small distances are amplified when they are too small to read accurately. The micrometer operates accurately through its threadform. The axial movement brought about through the screw’s lead constant is accurately and directly correlated to the extent of rotation of a precisely manufactured screw.  Secondly, thanks to the major diameter and appropriate screw lead, circumferential movement occurs from the amplification of axial movement.

The digital micrometer is able to provide accurate readings upon an LCD screen and it is this version of the tool that is proving more popular as time moves on.

What is a micrometer? The frame is made up of a ‘C’ shaped body where the barrel and anvil are held with no changes in their relationship to one another. To avoid any distortion of measurement, the frame needs to be thick therefore minimizing any amounts of contraction, expansion and flexion. Covered by insulating plates of plastic, the frame can withstand changes in temperatures.

In addition to the frame is the screw at the very heart of the micrometer. Situated within the barrel it is invisible to the naked eye from the micrometer’s exterior.

The ‘spindle’ is the shiny cylindrical component moved by the thimble (operated by your thumb with markings) toward the Anvil. The shiny ‘anvil’ supports the ‘sample’ and is what the spindle moves toward while the ‘sleeve’ is round and stationary and where the scale is marked. The ‘lock-nut’ can be tightened in order to hold the spindle still to read a measurement. At the end of the handle the ‘ratchet stop’ can be found. This is a device where pressure is applied via the calibrated torque slipping.

There are a number of micrometers operated in the mechanical engineering environment today. To measure tubes there is the ‘tube micrometer’ and to measure depth of steps and slots is the ‘depth micrometer’. A micrometer calliper (otherwise known as the Outside micrometer) will measure spheres and shafts to the best of its ability while the ‘inside micrometer’ accurately measures hole diameter. This leaves the ‘bore micrometer’ measures inside diameters and the digital micrometer, which delivers measurement readings to an electrical screen.