Watch maker tools (3) Vintage - 3 micrometers

A set of three micrometers for measuring the shafts of clocks and watches.

1) Louis Schopper micrometer measures up to 1/100th of a millimeter and works perfectly.
For shafts up to 3 mm and a little more.
Delivered in a nice little box.
Louis Schopper was a German manufacturer of measuring machines in Leipzig.
1881 - Louis Schopper opened a workshop in 1881, in
In 1952 the company was renationalized and its name was changed to VEB Werkstoffprüfmaschinen Leipzig.
So the micrometer was manufactured sometime before 1952.
2) micrometer in a gray plastic case.
No brand, works perfectly and can be adjusted to different heights via a small screw.
For objects up to 4 millimeters, measure to 1/100th. Manufactured in the 60s or 70s?
3) Teclock micrometer measures to 1/100th for objects up to 10 millimeters.
Recent manufacture. 2000s?

Micrometers are well packaged and shipped insured!