In locating points, leveling, and lay-outing, the engineer’s transit is the instrument that could do all these things. But unfortunately, in this modern world, things are changing so fast. New technologies are coming out which can do even more accurately and more efficiently. So, modern engineers don’t have the idea of the basic operations of the conventional one. Below is a list of the desirable adjustments to be made for the Engineer’s Transit:
1. Vertical cross hair lies on a plane perpendicular to the horizontal axis
2. Axis of each plate level lies on a plane perpendicular to the vertical axis
3. Line of sight perpendicular to the horizontal axis
4. Horizontal axis perpendicular to the vertical axis
5. Axis of the telescope level parallel to the line of sight
6. Vertical circle should read zero when the telescope bubble is centered (for transit having a fixed vertical vernier)
7. Axis of the auxiliary level parallel to the axis of the telescope level when the vertical vernier reads zero (for transit having a movable vertical vernier with control level)
8. Line of sight, insofar as defined by the horizontal cross hair, coincides with the optical axis
9. Axis of the striding level parallel to the horizontal axis (for transit equipped with striding level)
10. Proper adjustment of optical plummet
July 19th, 2010 at 10:25 am
this is epic!!!!!!!!!!!!!!!!!!!!
whahahahahahahahah