Core TradesQuestion 59 of 700
A level is set up and a backsight of 5.20 feet is read on a benchmark at elevation 100.00 feet. A foresight of 3.40 feet is then read on a new point. What is the elevation of the new point?
a.101.80 feet
b.98.20 feet
c.105.20 feet
d.108.60 feet
Explanation
Height of instrument = 100.00 + 5.20 = 105.20 ft; the new point = 105.20 - 3.40 = 101.80 ft. Confusing which reading to add versus subtract produces the other values.
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