Engineers take periodic site measurements to verify the scale conveys true information
Site Measurements
measureants is the amount or extent of something ascertained through use of calibrated instrument called measuring instrument. When measurements are done on site it is called site measurements.
Engineers use the site measurements to scale their sketches hence to ensure the scale is always correct periodic measurements should be taken.
On-site measurements value and sketch measurement value gives the scale which is the ratio, should be maintained always
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