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I feel like I've achieved the next level up . First watch with homemade part installed ( setting lever ). FHF 73, not bad to work on, simple and sturdy, and part working perfectly. An Avia and in time for this year's Olympics. It has a teenage dial ( bit spotty )

Not a family member, and yes, it no way near as good, as some information got lost from original site and some information got incorrectly copied. The original site is available as iOS app here: https://apps.apple.com/fi/app/ranfft-watch-movements-archive/id6502008939

This is the 3th attempt for this specific pinion. Othervice I have made many for pocket watches, but they are much bigger. This is really small. The pictures does'n t show things correctly, there are blinks that my phone camera can't manage well

The final result is not perfect looking, but is working well. The wheel is pritty small - the OD is 1.8mm

I visited the Breguet Exhibition today. https://www.sciencemuseum.org.uk/about-us/press-office/rare-timepieces-unveiled-new-display-science-museum The Science Museum now holds the collection of "The Worshipful Company of Clockmakers" - "The collection includes more than 600 watches, 90 clocks, 30 marine chronometers and a number of fine sundials and examples of hand engraving, mapping the history of innovation in watch and clock making in London from 1600 to the present day." It's well worth a visit. They have some amazing pieces by the likes of Harrison, Breguet, Tompion etc . I've visited twice before but decided to go and see the Breguet Exhibition. Maybe I was expecting too much, as on reflection, "More than 20 extraordinary timepieces designed by inventor and watchmaker Abraham-Louis Breguet " isn't going to take up that much space. In reality, it's just one cabinet. But, Oh those watches, stunning , e.g. (No 1297 was made for George III and is valued about £1m) I tried a couple of pics, but with subdued lighting and taking through glass, they aren't good. I like thin hands on a watch - how about these (I think this is a split second chrono) And this one, with all it's complications, is only 10mm thick ! What I found very interesting were a few very old machines for making watch parts, like this 17th Century gear cutter. The disc below has concentric rings with holes in, so that is can be set to cut varying teeth numbers.

10.46 according to Google. What do I do with it once I have the measurement in lignes?

Only £2 more than you are worth. Hehe.

If you look at this thread, you can see I had exactly the same problems with balance springs with 2 prongs on a Smiths 627. The slots in the chaton were not big enough to get the ends of the spring out. I had to bend them to get them out and back in. Not ideal. I don't fancy having to do it again as they could easily break, and where would you find replacements? I didn't come across the 3 prong type.

I don't want email notifications, but I'm not getting the bell notifications. Ha ha, and then I get one about your message @GuyMontag

Bravo.

The diameter of the movement is 23.6mm

You better use a flat grinding stone for this. Seitz provided a (rare) round one from Degussit. Frank

Just installed it on my iPhone (my only iOS device) and it appears to be intact and functional. I may have to go out and buy myself an ipad just for this app.

The original database is available on iOS devices here: https://apps.apple.com/fi/app/ranfft-watch-movements-archive/id6502008939

It needs to be stirred before use and that makes it feel a lot thinner than when in the bottle. Does it feel as thin as 9010 after stirring it? I guess not! Yes, it's strange! I don't know, but if it is on impact it would make sense.

All I can say is the set I used was quite old and belonged to my master and it was complete the parts were numbered. What you might have are cheap replacements could be made in the likes of China who make cheep crap.

Update: I posted over on NAWCC and it looks like I melted the fine coil wires where they come into the solder lugs. After dropping the heat way down on my iron and being absurdly careful, I have a humming fork!

It was £10 + min fee, total £16, could not leave it there. Its a Stanton A.D.2. http://stanton-instruments.co.uk/

It is John, with a little cornflour added

I wonder if 9415 is based on a base oil of 941? it's interesting what questions bring and the tech sheet answers it's the viscosity of the base oil. Then the impact? There is something we're missing here for that which would have a big influence on all of the house image above is 9514 image below is 941.then always interesting when specifications do not exactly agree? They ledge above for 941 indicates 110 viscosity but the image off the spec sheet is slightly less but I guess close enough my understanding of the concern of too much 9415 is as we know the loss of amplitude. But why do we have a loss of amplitude? So impact it's basically oil should be very slippery. But what about non-impact? Like the edges of the escape wheel? Another thing that comes to play here is the shape of the escape wheel itself. Notice on the last a more vintage escape wheel with just a flat surface whereas the modern escape wheels usually made out of steel versus grass much much thinner their contact areas greatly been reduced and sometimes I think there even slightly curved. So is it conceivable at everything that isn't a flat surface on impact is going to be sticky? So this is where the shape of the escape wheel will have a big impact literally on how slippery things are. Oh and for all of you obsessed with worrying about too much 9415 I never worry about it because typically I'm doing pocket watches and it doesn't seem to be an issue at all. on the other hand I'm much more concerned about a watch that keeps time for 24 hours as opposed to the concern of the group of keeping amplitude for 24 hours. Then yes some pocket watches have steel escape wheels and do look like the escape wheel on the right.

They showed up! It's a perfect fit. Can't wait to populate it and try it out.

Yes. If that's not what you are experiencing...start looking for something rubbing. A 1st guess is that one of the hands is rubbing against the hole in the center of the dial. Especially if you now have lower amplitude in face up/ face down positions.