Czapski, Theorie der optischen Instrumente nach Abbe, published separately at Breslau in 1893, and as vol.
Eppenstein, was published at Leipzig in 1903 with the title, Grundzuge der Theorie der optischen Instrumentenach Abbe, and in vol.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "instrumente" in a variety of sentences. We hope that you will now be able to make sentences using this word.