D2 - Site Layout Flashcards
1
Q
what is Zenith?
A
the point directly above the instrument vertically, 90 degrees
2
Q
what is the smallest increment the instrument can read?
A
5 second
3
Q
what are the 3 standard options for distance measuring?
A
horizontal, vertical, aligned with line of sight
4
Q
where is the Tribrach and alidade located
A
The base to level and quick release the instrument
5
Q
what does the vertical circle compensator do?
A
always sets the device plumb automatically
6
Q
what does a prism do?
A
Reflects light back to the instrument
7
Q
In reference to a right angle triangle, what is the slope distance?
A
the Hypotenuse of the triangle
8
Q
how many control points must be shot with the “anywhere method”?
A
2
