photographic zenith tube वाक्य
"photographic zenith tube" हिंदी में photographic zenith tube in a sentenceउदाहरण वाक्य
- A second portion of the observatory was constructed to house the Photographic Zenith Tube.
- The observers used the Photographic Zenith Tube to capture picture data using the Zenith telescope as a guide of alignment and star track.