How is humour employed to comment on the pains that the author took to get his watch set right.

It is funny how the author and his dear watch had to go through all the pain that was delivered by seven watch makers. In the end, it was all futile and no good was done to the watch. The seven episodes with the watch makers are humorous as while all the watch makers tried their hand on the watch, toying it all up and operating and exploring and dissembling and then assembling every inch of it, it all gave sheer pain to the author to whom the watch was so dear. Every time with all the hope and strength he took it to a new watch maker; however, not a single of all the tinkers could put it all back to place to make it function all properly. How strange it is that none of the seven watch makers could mend the watch while they all experimented and did all sorts of research and development on it.