Definition:Imperial/Length/Chain
< Definition:Imperial | Length(Redirected from Definition:Chain (Linear Measure))
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Definition
The chain is an imperial unit of length.
\(\displaystyle \) | \(\) | \(\displaystyle 1\) | chain | ||||||||||
\(\displaystyle \) | \(=\) | \(\displaystyle 4\) | rods, poles or perches | ||||||||||
\(\displaystyle \) | \(=\) | \(\displaystyle 22\) | yards | ||||||||||
\(\displaystyle \) | \(=\) | \(\displaystyle 66\) | feet | ||||||||||
\(\displaystyle \) | \(=\) | \(\displaystyle 20 \cdotp 1168\) | metres |
Historical Note
The chain was invented by Edmund Gunter for the purpose of land surveying.
The original Gunter's chain was a physical chain, $66$ feet in length, of $100$ links.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $11$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $11$