Here's the final result

Apr 11, 2019,11:44 AM
 

With a few annoying obstacles along the way, I pulled the balance cock, replaced the stud holder and adjuster, and reinserted the balance into the movement.



I thought I would try a new iPad-based timing meter, so downloaded the software and ran some tests while I adjusted the watch. This unit used the microphone in an iPhone headset, so I fastened it on securely with some cleaning putty and let it run for an hour or so (of course the back cover is off during adjustment - then replaced for a final check and for the photo).



The iPhone microphone looks like this if you've never noticed before; it's on the little bar that lets you adjust volume on the ear buds:





The mic listens for the tic-toc and the software interprets the results - this is basically how all audio-based timers work.





I'm happy with these results - and will give the watch back to the owner after wearing it for a day or two to confirm them.

Cheers,

Cazalea

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What is wrong with this Montblanc?

 
 By: cazalea : April 10th, 2019-12:28
It's not running. The owner dropped it on the bathroom tile floor. My Stowa shown for comparison. Cazalea ...  

Only 17 minutes elapsed diagnostic time, well done!

 
 By: cazalea : April 10th, 2019-12:47
You are exactly right. Now the harder work begins - to open it up and put it back together, without injuring the balance spring (hopefully). Cheers, Cazalea

Both using Unitas Movement 6498

 
 By: cazalea : April 10th, 2019-13:31
Both mildly decorated; Stowa with swan's neck adjuster

OK, diagnosis over, resuscitation has begun

 
 By: cazalea : April 10th, 2019-14:48
I've decided to get right to work, as a patient who is handled quickly and carefully has a better chance for survival, don't you think? I removed the back cover. Notice the blued screw near the word SWISS is mostly undone. The adjusting arm has fallen off...  

Mike is a stud by all measures. Watch you tired movements.

 
 By: Bill : April 10th, 2019-20:56
Wow you really know you stuff Way above my pay grade. Bill

Here's the final result

 
 By: cazalea : April 11th, 2019-11:44
With a few annoying obstacles along the way, I pulled the balance cock, replaced the stud holder and adjuster, and reinserted the balance into the movement. I thought I would try a new iPad-based timing meter, so downloaded the software and ran some tests...  

Postscript

 
 By: cazalea : April 11th, 2019-12:54
Here's the ladies tiny Jubilee watch bracelet and the gunk that came out of it! ...  

This is an interesting app..

 
 By: LS : April 11th, 2019-16:16
I think I found it in the app store. Is there anything one needs to know to use it? Or does it just work?

It helps to know what the data represents

 
 By: cazalea : April 11th, 2019-16:25
But if you just want to see how your watch is performing, it just works. You do need a quiet room and you need to have the mic directly over the escapement- so it‘s nice to have a transparent caseback. Cazalea

:) :) [nt]

 
 By: VMM : September 8th, 2019-15:04

Wow, Mike, good job

 
 By: ChristianDK : September 11th, 2019-02:51
is there anything you CANNOT do??!

The dinner dishes [nt]

 
 By: cazalea : September 11th, 2019-08:12

ROFL!

 
 By: ChristianDK : September 11th, 2019-11:13
+1 haha

:))) [nt]

 
 By: amanico : September 11th, 2019-11:14