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HSL last won the day on January 8

HSL had the most liked content!


About HSL

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    Super WRT Addict
  • Birthday 11/09/1969

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    I love anything included in Horology.
    Other hobbies I have include Gardening, Genealogy, Genetics, Artificial Intelligence (AI),Electronics, Mechatronics, Robotics, General programming (C,C++,C#, F#, VB.Net, SQL and so on).
    In my profession I develope technology in the Nuclear area.

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  1. Those in the picture above is the hardcore ones no collar..
  2. Vintage hairsprings is probably the largest headache since most of the old knowledge has been forgotten when the modern watchmaker begun to buy balance complete with already matched spings and balances. The balance on these are laser adjusted. On the packages of the vintage springs there often are the markings Gr and Fce learning what they stand for would help people like me with less knowledge to choose the correct spring to vibrate faster. Was there any standardized system for this type of marking?
  3. Ah ok thank you for the answer. I found a 1223-21 in my treasure chest but no 8800 this far.
  4. Just out of interesst, what does that second crown do? I've seen some Newarks with a similar solution but they had a Ronda 1223 in them and the second crown wound the alarm. But is there an alarm on the 88XX?
  5. Well I was actually about to compare two cameras just to show how much improvement one can get with a good lighting but for some reason I just can't find the second camera a much cheaper SONY A37Y with macro lens too but for a fraction of the price. Guess I will not do that after all
  6. There were a couple of them and with different cases, the one in the Picture comes from a Tissot Seastar (9kt gold case) and there were some earlie Tissot 1853 with the same movement. It should say which one you have on the dial.
  7. I test linking to uploaded ones.. And here is the one you previoulsy only could see only a part of so one can zoom in quite a bit ;) ...
  8. I agree with this, a good lighting makes wounders. Usually when I post here I take a quick picture with my phone and the 21Mp is quite fair and the files are small enough to upload. But a camera, correct lighting and a macro is what it takes to do some good movement por*. This pictures is just a part of a picture since I can't upload the complete one (Camera is a Sony A7R II 42,4 Mp so the files becomes large) but one gets what the difference in ligting do compared to my phone ones, this is just a part of the picture, it is just over 800k large! (or small).....
  9. If it's just the part number you want I Think this is it. 065-507 (J810M CITIZEN STEM )
  10. I think there would be several possibilities to make a device like that to work. This sunday I got an hour to myself from my other household duties so I sat down and thought things throug. Eldery devices use a finely tuned spring and balance to compare the oscillation against, when the two balances are in sync you make a reading towards a scale. But modern equipment probably need something else to detect the spokes on a balance, since it's rotating on its pivot I don't think you could use sound to determine the oscillation. One probly wouldn't want to touch anything on the setup so two methodes comes into mind: 1. Use a Hall sensor. 2. Use light sensitive electronics. I think a hallsensor would work really good but I don't know how small thiny hairsprings would react to an electric field so I will go for a light sensitive sensor. Just out of chance I pulled out a TCRT5000 Reflective Infrared Sensor out of my Arduino toybox and made a preliminary test. I sometimes design high speed odometers for autonomous vehicles so this was a different challenge, to get a device which detect low frequencie movements. A hairspring in some cases oscillate at 18000 A/h which is a frequency off (18000/3600) 5Hz. The setup was able to detect even lower frequencies so I don't Think the Electronics will be the challenge but the design of the sensor setup might take an hour or two. I plan to use a non polarizing glas from a microscope on which the balance can spin freely. I only took 20 minutes this time to prove the concept and it will probaly work like a charm so this is something I will put into the projects que for fun things to do with your 3-D printer a dark Nordic Winter night.
  11. This I think is a cool thing to learn from but will not be enough to analyze the components in the oil, we use Raman spectroscopy at work to do this task. Maybe when the dark winter sneaks on I can run some samples to see what result one can get.
  12. The most mechanical watches has either a screw you loosen to release the stem or you push on a pin directly attached to the setting lever. In this case there could be both so I had to look it up and the database says it has a set lever screw. ZOD 76-75B 5443/1233 5443/ZOD 70 SET LEVER SCREW Sometimes when they have a pushpin and the wear and tear together with rubberized oil makes it somewhat harder to get it pushed in far enough, then one gets a bit tempted to push a bit harder and voila' one have pushed it to far and the setting lever makes one unexpected liftoff. Mostly you recover from this since you had to service the movement anyhow. Even the screws sometimes is a bit tricky but if one just gently push down at the same time one unwinds it the lever should be pushed down and release the stem. The "Magic hole trick" usually can be found working on cheaper quartz movements where the lever is directly jointed with a plate,
  13. On the Zodiac 76 you should have a set lever screw, turn it slighly while pulling the stem out should do the trick.
  14. Just as a fun fact in the same theme, there was a bunch of cases roaming around for a while. I'm sure they are contemorary WW2 stuff but probably never used. I've seen these NOS cases with Helvetia 800C movements in them. I guess they seem to be more accepted these days but is it a genuine WW2 watch? Can one just pop in a movement in them and say they just made a restauration, after all the cases doesn't meet any specs setup as a military watch. Maybe they needed a coctail watch for nicer receptions?
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