What is used in centering aid in theodolites, compass, plane table and variety of other surveying instruments?
A. Butt rod
B. Whites
C. Laths
D. Plumb bob
Answer:D
What is used in centering aid in theodolites, compass, plane table and variety of other surveying instruments?
A. Butt rod B. Whites C. Laths D. Plumb bob