kellner eyepiece वाक्य
"kellner eyepiece" हिंदी में kellner eyepiece in a sentenceउदाहरण वाक्य
- According to Edmund Scientific Corporation, " RKE " stands for " Rank Kellner Eyepiece'".
- In 1849 he founded in Wetzlar a company called " " Optisches Institut " " for the production of Kellner eyepiece.