The imaginary line passing through the intersection of cross hairs and the optical center of the objective, is known as
A)line of sight
B)line of collimation
C)axis of the telescope
D)none of these.

Question

Quizplus · Accepted Answer

The line of collimation refers to the imaginary line passing through the intersection of the crosshairs and the optical center of the objective lens in surveying instruments, such as theodolites or levels. This line is crucial for ensuring accuracy in measurements and alignments.

The Imaginary Line Passing Through the Intersection of Cross Hairs