What is the height of collimation method?

Answer

Height of collimation and rise and fall are two distinct methods of Levelling. The height of collimation method is normally used where more number of readings is taken with less number of change points for profile levelling and constructional work while the rise and fall method is preferred for check levelling where the number of change points is more.
Q&A Related to "What is the height of collimation method?"
the advantages of this method was that it is more quick and less calculation needed and the disadvantages, it less accurate compare to the rise and fall method.
http://wiki.answers.com/Q/What_are_the_advantages_...
The supply and demand for a particular stock influences price. For example, a company developing a new cell phone technology is likely to spark an increase in the demand for its stock
http://www.ehow.com/facts_7216043_causes-stock-pri...
The Falls are approximately 175 feet / 54 Meters high.
http://www.quora.com/What-is-the-height-of-Niagara...
The Upper Falls is 109 ft.; the Lower Falls is 308 ft.
http://www.nps.gov/yell/planyourvisit/canyonfaq.ht...
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