For my sensing project I decided to make a Digital Micrometer.

... PHYSICS Advanced Subsidiary GCE UNIT 2862 - (a) Instrumentation Task Aim: For my sensing project I decided to make a Digital Micrometer. I use analogue micrometers quite often in design technology but I always find it a long and time consuming process to read off the scale and find the reading that the micrometer gives. I am planning to make the micrometer accurate to microns as all micrometers should be, however this will require a great deal to calibrating and will require highly accurate test equipment. The project will measure distances using an accurate linear potentiometer. Therefore in short my project is to calibrate a linear potentiometer so you can reliably measure changes as small as a micron. Plan: In order to set up my micrometer I will need the linear potentiometer which the physics department already has. This potentiometer is mounted on a stand with the measuring arm sticking straight out into a large

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