Question

Length of Gunter's (Surveyor's) chain is

• A. 20 m
• B. 30 m
• C. 66 feet
• D. 100 feet

Hint:

Chain lengths summary:
Gunter's = 66 ft (100 links)
Engineer's = 100 ft (100 links)
Revenue = 33 ft (16 links)
Metric = 20 m or 30 m.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Surveying chains are standardized physical measurement tools historically calibrated for land acreage and linear distance surveying.
Key Formula or Approach:
\[ 1\text{ Gunter's Chain} = 66\text{ ft} = 4\text{ rods} = 100\text{ links} \quad (1\text{ link} = 0.66\text{ ft} = 7.92\text{ inches}) \]
\[ 10\text{ square chains} = 1\text{ acre} = 43,560\text{ sq ft} \]

Step 2: Detailed Explanation:
Standard surveying chains:
1. Gunter's Chain (Surveyor's Chain): Length = \(66\text{ feet}\) (100 links of 0.66 ft each). Invented by Edmund Gunter for convenient acre calculation (\(10\text{ square chains} = 1\text{ acre}\)).
2. Engineer's Chain: Length = \(100\text{ feet}\) (100 links of 1 ft each).
3. Revenue Chain: Length = \(33\text{ feet}\) (16 links).
4. Metric Chains: Standard lengths = \(20\text{ m}\) (100 links) or \(30\text{ m}\) (150 links).

Step 3: Final Answer:
Thus, the length of Gunter's chain is 66 feet, corresponding to option (C).