Cross hairs in surveying telescopes; are fitted

Question:Cross hairs in surveying telescopes; are fitted

1.in the objective glass

2.at the centre of the telescope

3.at the optical centre of the eye piece

4. in front of the eye piece


Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!