chain steel tape metallic tape invar tape
Answer Discuss in Comment
plotting becomes easy survey work can be completed quickly accumulation of errors is prevented all of the above
aligning the chain in a straight line between two extremities chaining over a range of mountains taking offsets from a chain line fixing ranging rods on the extremities of the area
copper and steel brass and steel brass and nickel nickel and steel
RF = 300000 1 cm 50 km 1 cm : 50 m 1 : 42000
accidental errors only cumulative errors only both accidental and cumulative errors none of the above
conditional error true error residual error weighted observation
4 10 16 64
cloth and wires invar linen steel
20° 30° 45° 60°
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