Rolex

The Rolex Microstella Tool............

Apr 07, 2013,04:21 AM

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 little more exact and stable.

At the backside there is graduation which means 1 second per day for each line.

A closer look to the tool.

Here we have a balance wheel with the Microstella screws.

Here is how it works.

A few pics of the tool in action.

The instuctions from Rolex.

And some pics of the new/current Microstella tool.

Comments: view entire thread

Thanks for teaching me something, today, Jocke.

By: amanico : April 7th, 2013-04:33

I always wondered what was this Microstella tool and how it worked, now I know! Thank youk Jocke, for this superb series of posts. Nicolas.

Superb!

By: Ares501 - Mr Green : April 7th, 2013-16:22

Great post Jocke so cool and well explained Awesome pictures of course Must say that old tool looks much cooler to me Best D

Thanks Jocke

By: E.S : April 7th, 2013-20:53

very informative post, is this micro stella commonly use in watch industry? say patek or lange. thanks for sharing best, Ed

Thank you all, about the Microstella..........

By: Jocke - Bad Santa : April 8th, 2013-10:44

so is it Rolex way to adjust the balance, ALS & PP do it in their own way.

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.

I've seen this tool before.

By: patrick_y : April 8th, 2013-12:07

Nice to know what it actually does. Thanks Jocke!

Very informative post Jocke!! I knew the tool, but not how it was used...

By: Subexplorer : April 10th, 2013-05:15

... 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.