The photograph given as Fig. 10.7 shows a section of a grille made up of straight and curved iron bars. How would you measure the length of the bars of this section, so that the payment could be made to the contractor?
The grill has both straight and curved rods.
The straight rods are measured with a measuring tape while the curved rods can be measured using a thread. The thread is kept along the curved rods and marked to measure it with tape.
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