I would put a lock on the drawers. 

You look familiar!!   It’s quite strange as it was only last November when I asked myself, “how exactly does a watch work?”.  Six months later I’ve spent a fortune on watches, working and broken, and an equal amount on tools.    I find it interesting and frustrating in equal measure. I see watchmakers on YouTube getting things right every time, yet I struggle to put in case clamps!! 

The watch case consists of three parts: the upper part with crystal, the middle part (depicts in photos) needs cutting (make current groove deeper to 0.5mm, see arrow) to install the movement and the third/bottom part of screw-down. Thank you for your response.

It looks a bit rough but it’s older than my parents and I’m 58!! It wasn’t working when I got it and I’m really pleased that it is now.

I'm finding this slightly confusing that you would make a mistake like this. The balance hole jewels themselves are very distinctive in how they look. If we were dealing with a modern watch where you have the jewels like the end stone all by itself that often times there is a confusion over which is the curbside in which is the flat side but typically when they're in brass settings that's a lot harder to do. So down below is the image of how the jewels should look without their settings. I think it really have a tough time getting the balance pivots in through the hole jewel if it was in the upside down? Then down below is an image of a balance jewel in a setting. You'll notice typically there is a edge in other words is not flat there's two different diameters. One of the problems it happens to a lot of people is when you're putting this jewel into the hole you need to use around toward and push down and make sure it's down flat and not at some weird angle often times they don't fit in very nicely they can go in with a little bit of force. But no matter what it has to be Completely down.   Then this is what it looks like all assembled where putting things in upside down seems impossible?   I see the restless discussion is gone on to a second page but I will do the collet rotating here and then look at the hairspring nightmare on the other page in a little bit.   My preferred way is leave the collet on the staff because anytime you do anything with it as you've observed it can sometimes lead the problem. Then you always want to have a clear view of the collet so rotating it in clever fashions in the watch can lead to disaster so it's much better if the balance is off the bridge if you can do that One of the ways that makes this a lot easier would be a permanent marking it felt pen that makes tiny dots. So it no power in the watch she manually rotate the balance wheel until it's where it's supposed to be for watch in beat then you site from the center of the balance jewel straight out through the where the stud holder is and put a dot on the balance rim which corresponds to where the stud should be if the watch is in beat. Often times the Swiss companies actually would mark the balance wheel they put a little pinprick there so you would know where your stud is supposed to be then when you remove the balance wheel you will find the stud will be on one side or the other of your little.you just have to rotate it and I would say it's pretty simple but based on the next page I guess not then hairspring tools not just for rotating hairspring as they came in a set unfortunately I no longer have the box which makes finding the set a bit of a challenge Of the tools the orange one in the middle is the most popular at work it keeps getting borrowed by my coworkers. Yes I work in a shop where personal tools apparently belong to everyone else in the shop such a bizarre concept. So this often means I have to go looking for my tools so I can do my work. Then he ever variety of tips and these tools are all designed for straightening out hairspring problems not everything is a band a lot of times things have just they look really bad but they're not actually been to a lot of these tools will help with that Then the largest handled tool from the side view is basically a very long taper. When you're rotating the collet screwdrivers are extremely bad as you do not want to try the collet open as it leads to breaking. The tool itself should ideally drop into the slot with no effort and if you let go of the tool it should just fall over practically than other words there should be no aggressive force it just drops in. This is what the tool looks like in use. If you didn't have a tool like this you could just sharpen a screwdriver tip to having a nice long taper that as I said should literally drop into the slot. Then because the balance wheels out it makes it a lot easier to see what you're doing also   What can I say here? Remember this is saying that has to do with cutting wood for instance measure twice cut once and I words figure out what you're doing before you do it. A lot of times hairsprings that look bent aren't really bent. Sometimes things are just overlapping this is where studying the hairspring first before fixing which typically people will bend so you're right your hairspring is now bent. So fiddling with it not grasping what you're doing yes that's definitely an issue now.