You don't need any special tool to remove pieces, tweezers will do. Measure size with digital calipers. But you need a press to put it back, you can get a cheap one on Ebay, just don't expect too much from them. Same for the crystal, there are specialized shops but Ebay is good for that also.
I hear it is polite to introduce yourself first so hello. I'm Irish living in Dublin. I own only a few timepieces - the most known an Omega Seamaster automatic that I bought without knowing much about watches 15 or so years ago but which I don't wear all that much anymore and may sell on. besides that I would be more into clean aesthetics than brand per se currently. Favourite watches from looks point of view would be the clean and two-tone appearance of the IWC pilots watch.
thank you kindly and I will go to the introduction section and do up a short intro right now.
would you have any suggestion as to how to remove the bits effectively without a press so not as to get bits stuck?
also would you suggest where can I inexpensively source a new crystal? I don't know the crystal size but the width of the watch excluding crown is 46mm and the miyota movement says that its minimum a 35mm case