Which of the following introduces an error of about 1 in 1000 if 20 m chain is used« Back to Previous Page
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A. length of chain 20 mm wrong
B. one end of the chain 0.9 m off the line
C. one end of chain 0.9 m higher than the other
D. middle of the chain 0.45 m off the line
E. all the above.
 Posted by Civil EngineerAsked on August 4, 2016 1:03 pm
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