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This beauty arrived today. My first jeweling tool. So excited

Hello, That's a good question , but I don't really know why there are two types. Maybe the factory revised the stock number on the helium release valve to match variations of the watch (chrono and non-chrono, cal 2500 vs 8500). I believe they may have made different sized versions as well, so some things have been changed since its introduction. J

Hello @number98, I looked up your Omega case using MATSYS online system and got the following hit: It looks like that valve pusher should work on your Omega....but I also see its an expensive part, so use your judgment regarding the seller just in case a return is required! J

We will see. I am sure that we both were educated in different ways about this.While I dont think that we were not lied to,I suspect that depending on your country, different facts were omitted.

It may sound weird but a good way to adjust it is with it mounted on the center wheel shaft, squeeze it at the crimp with fine nippers. It will actually relieve some of the tension. Otherwise you can hit it with a broach, but it's very easy to go too far.

You could try specsavers!

Just ordered it.My father fought in that war.I have always wanted to better understand it.

I think it for individually holding balance screws safely. This would to allow you to file small amounts off them when poising a balance.

There are so many possible causes, can you give any more info? Does the train have backlash with the pallet fork removed? Did you peg the jewels, especially the escape wheel and pallet fork jewels? With the fork out, does the balance oscillate freely and for some time? Are you sure you put the right mainspring in? Try removing the tension spring for the sweep seconds and see if amp goes up to eliminate that.

Hi, it’s running fast because the amplitude is so low... Cheers Kaz Sent from my iPhone using Tapatalk

The answer is a minefield. There is so much on the internet about watch hairsprings your best bet is to use google. You will even find how they are made.

I can think of be several causes for poor power reserve- Inefficiency in the auto winding mechanism (can be caused by a number of things, e.g. wear, contaminants, and dry lubricant). - Mainspring bridle slipping too early during winding (usually a wear or lubrication issue in the mainspring barrel)- Watch stopping before the mainspring is fully unwound (usually caused by particles/ dirt or a defective / worn part). In this case the full power reserve may have built up in the mainspring as it should, but watch stops when it comes to a lower state of wind.

In no way I intend to steal the job of our Mark, from whom I only can get inspiration (both in making the videos and in servicing the watches), but I started some time ago documenting (silently) my services in a series of videos. all watches are mine to either keep or resell on the popular online platforms, funding in this way the purchase of more expensice, better mechanical watches. But that is another story... With this post I would like to introduce a series of parts of a video I made servicing a Seiko 7T32 quartz movement last week, and for the first time talking about it live (btw, I hate my voice...) The video was prompted from some friends on another forum which were wondering if it was worthwile servicing this particular movement, since it is all in plastic (well, almost all). The thing is that I like tinketing with this movement, even if it is deemd by experts as a waste of time, since it is usually swapped for a new one when it brakes down. I am though of the opinion that this particular series of quartz chronographs deserves a proper service, also considering that it is not in production anymore, and you cannot find them easily anymore at decent prices. Enough said, here the series of videos (6 parts in total) Part 1: Part 2: Part 3: Part 4: Part 5: Part 6: There will be a part 7, in which I deal with the dial side of the movement, but it is still in the works. Hope you enjoy the videos, and any comment / criticism is very well welcome. George