Game for the sysadmin day: guess the racks in our workshop by the handles?

We have a huge “zoo” of various iron in the test area. Below you will find a whole collection of handles from the cabinets. Some of them are rude but functional, and some are a real little engineering marvel.





one





2

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The game is simple. You just need to say how many familiar pens you met . And guess one of them.







You need to guess this rack, pen without number:





The answer is below.





3





four





five





6





7





eight





9





ten





eleven





12







13





14





15





sixteen





17





18





nineteen





20





21





22





23





24

Answer

And yet next in the next closet there is such a wonderful pen:







PS If you have interesting pens - please add pictures to the comments.