Swiss made tessa 2-3 micrometer

[Brax]

Recently got a 2-3 tessa micrometer in a tool box sell but it appears the set screw/pin is missing does anyone have a idea what size or thread it is?

 

[Mauzinette]

Hi Brax,

The people at Tesa are super helpful and you can contact them using the following form https://tesatechnology.com/de-de/kontakt/kontakt/. The form is in German, but you can write them in English. Hope this helps!