1. A specimen is focused under a scanner, you were asked to shift it to LPO. Which procedure should you follow to be able to correctly focus the specimen under LPO?

A. Turn the revolving nosepiece until LPO is aligned to the hole in the stage. The proper alignment indicates proper position of the LPO.

B. Turn the revolving nosepiece until a clicking sound is heard. The sound indicates that the objective is properly positioned.

C. Turn the revolving nosepiece until the LPO is aligned to the body tube and eyepiece. The proper alignment indicates proper position of the LPO.

D. Turn revolving nosepiece until you think it is positioned correctly. That is the best procedure based on your own understanding.​