Folks, these tools are German made in the mid 50s. I use them for engraving, but I also use them for fine detail in woodcarving.
Pay particular attention to the flat tools to the right.
When fine lines are required this is a tool you can make yourself. The tools in the kit are the production tools, but I made the flat, multi-lined tools myself.
You can fabricate these using any Tap found at hardware stores. The larger the tap, the deeper the cut. The thread widths or threads per inch determine the distance between lines.
Buy the tap and then have any machine shop cut off two opposing sides leaving a flat piece of metal with the "teeth" on either side. The tool holder is available at any hardware store and has small adjustable jaws to grip the flat tool.
These homemade tools are invaluable in shaping and scoring pertinent areas of wood, and being made of carbon steel they last a very long time.
Consider that some woods have virtually no visible grain, and we've used these tools to purposely create a grain.
The very large version can be used to create a grain in Precision Board which has no grain whatsoever. Still looks like wood, doesn't it.
P