Dial Up, Dial Down: Rounding Balance Staff Pivots
When adjusting to 3 or more positions, our first goal is to get the dial up (DU) and dial down (DD) positions to agree. How close is “close enough” depends… Read more »
Tag: Jendritzki
Dynamic Poising, 5: Finding the Balance Wheel’s Heavy Spot
We need to find the balance wheel’s heavy spot to put it in poise. So far, we’ve discussed some of the principles involved in doing this and worked through some… Read more »
Dynamic Poising, 4: An Extended “How To” Example
After reading the earlier posts in this series, you should understand the basic reasons why watches can have different rates across positions. But like everything else in life, you really… Read more »
Dynamic Poising, 3: Why the 4 Vertical Rates Differ
The second task in dynamic poising is to align the 4 vertical rates. For vintage watches, the vertical rates usually differ by a lot. My trusty 12s Illinois, for example,… Read more »
What Watches Can (or Shouldn’t) Be Adjusted?
We can make almost any watch tick and keep good time when it’s left dial-up on a shelf, but not all watches can or should be adjusted to keep close… Read more »
How “Near” is “Near Zero”? Accuracy Standards for Watch Adjustment
We often repeat Jendritzki’s definition of adjustment to alter the period of the balance and spring so that the daily rate of the watch comes as near to zero as… Read more »
Our “Textbooks” for Adjusting Vintage Watches
You can only learn so much on the Internet. As old as it makes me sound to say this, you need to read some books—bound, physical, used-to-be-a-tree books—to get good… Read more »