Question 1

What is a link in surveying?

Accepted Answer

A link is 1/100 of a chain = 7.92 inches = 20.12 cm. Surveyor chains have 100 links. 25 links = 1 rod.

Question 2

Why are links used in land surveying?

Accepted Answer

Links make chain calculations easy: 100 links = 1 chain, 10 chains = 1 furlong. Originally used with physical surveyor chains.

Question 3

Is this conversion factor exact?

Accepted Answer

Metric-to-metric conversions are exact (1 km = 1000 m). Imperial-to-metric factors like 1 inch = 2.54 cm are exact by international agreement.

Question 4

Why do some countries use different units?

Accepted Answer

Historical reasons - the metric system spread from France after 1795. The US, UK, and a few others retained older systems. Science uses metric worldwide.

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