Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

There is some wise advice about the reality of building models and the tools needed to build them here:
https://modelengineeringwebsite.com/Apprenticeship_1.html

Here is the link to "The Museum of Our Industrial Heritage" YouTube channel offerings that may prove educational, entertaining, interesting, informative and useful to some here.

https://www.youtube.com/@MuseumofOurIndustrialHeritage

They list a number of offerings many of which are old training and educational films from a bygone era, that may well be of better benefit and value for the amateur home machinist than some of the newer offering currently available. Certainly, they show simple basics that need to be learned and understood for advancement in the hobby to have a good solid foundation.

Here is one such offering on care and usage of the Micrometer:

https://youtu.be/lNj-1vUmanQ?si=V7HoHkaYGvtwXAC2

It is interesting, at least to me, to note that a micrometer they are using in the movie is of a relatively modern type, which includes several features of which they make no mention, trying to keep the movie simple and uncluttered of more advanced complications I suppose, but it does seem that they probably should have used an earlier, more basic and simple style micrometer for their demonstration, so as to avoid the appearance of leaving out important further information.

Just to be clear, the advanced features of the micrometer in the movie that are left unmentioned include a spindle/thimble lock, reading scale to 1/10,000" (0.0001") and a thimble ratchet stop (similar function to a friction thimble) used to mechanize the "feel" of correct standard thimble pressure. Developing the correct "feel" is actually a better idea generally because the mechanized additions to the micrometer will change and require adjustment through time, and with every adjustment the mechanized "feel" is thus changed.