Question:
If I have a tabletop shtender which I use to learn, can i use it to read my textbooks for university as well or do i need to buy another one?
Answer:
It is permitted to use the shtender even for other books. The reason is although the shtender is designated to use for seforim, however it is usually supporting the cover of the sefer, which is supporting the sefer itself. Therefore, the shtender is considered a tashmish d’tashmish (a use of a use), and it is permitted to use it for other uses.
Sources:
Aruch Hashulchan 154-4, Ginzei Hakodesh 13-2.
