What are the advantages to the height of collimation method in surveying?

I'm guessing you are doing the same course as me!!

This was a help to me: from google books. I hope this link works, if not try searching for comparisson of HOC & R&F methods.

google.com/books?id=hqFcPbmmxC4C&pg=PA131&lpg=PA131&dq=Reducing+levels+by+rise+and+fall+method&source=web&ots=F7x3jGi-MV&sig=zi7JVYCBLT8-z42OKfst2XFIK-o&hl=en&sa=X&oi=book_result&resnum=1&ct=result">http://books.google.com/books?id=hqFcPbmmxC4C&pg=PA131&lpg=PA131&dq=Reducing+levels+by+rise+and+fall+method&source=web&ots=F7x3jGi-MV&sig=zi7JVYCBLT8-z42OKfst2XFIK-o&hl=en&sa=X&oi=book_result&resnum=1&ct=result

Good luck

Pete

p.s if you find any more info please get back to me

thanks Pete.

your links did works for me...