I use an app on my android phone using the built in mic. Weishi 1900 is on my Christmas wish list. Single line trace shows that the beat error is minimal. Steve Sent from my Moto G (5) Plus using Tapatalk
Yes. My best teacher says one has to begin from bell tower clocks, I know he's not joking since he has repaired a good few ones.
But, every other day we have absolute beginners declaring their firm intention to attack their rare, valuable, and difficult time pieces. Sometime they can be convinced to know better, sometime they are not. But rarely they are then heard again.
Both things can be done. Questions for a beginner are, do you have all the tools needed? And (maybe more than one) cheap / disposable movements to practice? And, consider if the money and time related to solving the above can be better spent for something else still in the field of learning repairing / servicing?
I would not recommend Seiko lubricants. They don't know even say if they are synthetic based, I suspect they are not, plus are expensive, especially when bough all together do do perhaps few watches per year.. Like it or not, the best standards and range is offered by Moebius.