I am confused by these instructions on how to use a micrometer. Does anyone know of better ones? I need to measure the thickness of my valve lifters (and then do a feeler gauge test but that is not done with a micrometer) because I didn't keep track of my valve lifter before taking apart.
Those instructions sure are confusing!
I can see a couple of places where the wiki instructions are clear as mud.
The example states that the micrometer in the example is meant to measure lengths between 2" and 3":
In this particular example, the micrometer measures the range from 2" to 3”
And then 2.1 highlights the 2 on the sleeve for no logical reason whatsoever. This has nothing to do with how the 2 in 2.545 is obtained. I wouldn't pay any attention to Step 2.1:
The small markings on the sleeve look like they should be 50-thousandths while the explanation treats it as a 25-thousandths marking in 2.3.
The example isn't coherent with the images. I'd recommend watching the video as @Paulster2 suggests in the comments.