This is always the misunderstanding. Yes demagnetizing itself will cost less than 30 seconds, but good practice is to test it first for timekeeping, measuring if it really magnetized, if yes demagnetize (yes that alone is <30 seconds) afterwards it will need a check on the Witschi or timegrapher again to see if the issue has resolved. But what many members forget here on the forum is in addition the time to pick up the phone for the initial contact, actually getting the watch handed over, booking it, calling the customer it has been repaired, making the invoice, receiving the customer and informing him on the procedure and the results, waving goodbye etc. So a simple 30 seconds job in reality is more often 20 minutes or more due to all the things around it.
