The Rolex Microstella Tool The Microstella is Rolex system to adjust the balance wheel to make sure the watch keep the COSC standard. To do that there is a special tool to adjust the screws with. The old tool looks like this and it's oil filled to be a li...
however do you have a picture of the tool next to something for scale..? It looks like a 'big' tool but when you then realise what it does it must be small but I can't work out the relative scale of it. Thanks, Andy.
... thank you for the explanation and clear & great photography as usual to show the way it is employed to adjust the balance screws. Very cordially, Abel.