SantaFe158 posted:Bringing this thread back to life. I bought a 1950's Hamilton 992B last year to use at work when I'm the scheduled engineer. It works well enough for what I need, but it loses time every couple days and needs to be reset every day I use it. Does anyone know of a good watch repair shop in the Detroit area that would be capable of giving it a proper tune up?
You might just try adjusting it yourself. Unscrew the back cover, and you will see the speed adjustment pointer. There is an extremely small screw that can be turned by using a razor blade in the screw head slots. The screw head slots form a "+" so that only 1/4 turn adjustments can be made, using a razor blade. The adjustment pointer has a slow "S" and a fast "F' either side of the pointer, so that you know which way to turn the adjusting screw to move the pointer.
Some tips concerning maintaining accurate time keeping with your 992B:
1) Try and wind the watch at the same time every day, whether you are caring it or not.
2) Try and hang the watch so that it is in the same position that it is carried in your overalls, i.e. get a nice piece of VERY hard wood block and install a hook to hang the watch on when you are not caring it.
3) Your 992B should maintain correct time within 10 seconds per week, once adjusted properly. If not, it might require professional cleaning.
