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Showing content with the highest reputation on 04/24/2019 in all areas

  1. Hi All ... I just wanted to let you know that I've just released Watch-O-Scope 1.3, with the following improvements and new features: Built-in volume boost, adjustable via scope and manual adjustment modes, requiring less external amplification. Long term test improvements: Ignore extreme outliers (±4σ) for better immunity to non-timekeeping noises (e.g. the date wheel clicking over at midnight, doors slamming, cars crashing outside). Clip graphs to three standard deviations (±3σ). Highlight one standard deviation (±σ). Support for manually selected beat rates
    2 points
  2. ETA 955 Service Walkthrough "The Workhorse of Highend Quartz" The ETA 955 and 956 Quartz Movements are the most commonly found movement in high-end quartz watches with three hands and a date feature. You will find them in Omega, Tag, and many other brands on the market. For this walkthrough I will be using an 955.412 Movement as my example; but the 956 is so similar to the 955, that this walkthrough will suffice for both. Please note that the numbers after the decimal place only relates to the factory in which the movement was made, so yours could read 955.112, or another factory nu
    1 point
  3. Yes I know how Rolex in the 1920s used another manufacturer to make the Unicorn movements, so they are not real Rolex's, just kinda Rolex's by association in that Rolex had these made for them to be sold as cheaper watches. Below are photos of my Unicorn watch which I can date pretty well due to it being engraved 12/8/1927. Going by this website the movements were made by BTC ' Beguelin & Cie SA, Manufacture de Montres Damas et Tramelan Watch Co ' http://www.vintagewatchstraps.com/movements.php#BTCo If anyone can provide more information on these movements that would be
    1 point
  4. How do you know that what appears to be a poise error is from the hairspring? High grade watches used to have poised hairspring collets, and generally overcoil hairsprings. Modern watches almost universally have even better collets, with attachment of the spring inducing no stress at either collet or stud, and often some supplemental heat treatment of the terminal curve, which altogether gives performance like an old overcoiled piece. The hairspring alloy makes a difference (big) in performance as well, a Nivarox 3 will never perform like a 1, and even the 1 grade has better and worse sprin
    1 point
  5. I think the flip would also occur as it is a result of the behavior of the complete system, not of the balance wheel only. Do you know this blog, very helpful: https://adjustingvintagewatches.com/category/dynamic-posiing/
    1 point
  6. Why Tapatalk? The software that powers the forum has excellent support for mobile browsers. Just try, I think you'll like it.
    1 point
  7. I don't have a "true" GMT watch, but my understanding is that you set the GMT hand by pulling the winder to the setting position for the GMT hand, and that hand will then complete one rotation for every two of the hour hand, giving you a 24hr time by reading from the 24hr chapter ring, and if this hand is set to track GMT, then you can work out the time in other cities/zones by looking at the relevant city name on the outer bezel. Some dual time zone watches simply have two hands which can be positioned relative to each other, but driven by the same hour wheel, and are not strictly GMT
    1 point
  8. GMT hand...at midnight all hands should point at 12 ...
    1 point
  9. I like the numeral script ....
    1 point
  10. For Easter Sunday - 1961 \ 1962 "21 Jewels" - The 21 series was the follow up to the 400 series that had either a Hatori or Laco movement inside. You will find many transition piece such as this one that have 400 as the case back. There are even 400 series with 21 jewel movements.
    1 point
  11. My recent restore of a 1984 Timex Diver style. Problem was that moisture had gotten in because someone had glued in the wrong size crystal. After several attempt to revive the movement I moved on to a swap which was also in bad shape but did comeback quite well. I added the band was to give it a full Timex look.
    1 point
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