The length of Gunter's chain, used for chain and tape surveying, is :

Question

Accepted Answer

The length of Gunter's chain, used for chain and tape surveying, is 66 Feet.

**Explanation:**

*   **Why Option 4 (66 Feet) is correct:** Gunter's chain is a specific surveying tool historically used for land measurement. A standard Gunter's chain is precisely 66 feet long. This length was chosen because it simplifies area calculations. One Gunter's chain is equal to 4 rods (or poles), and 10 square chains equal 1 acre. This relationship makes it easy to convert measurements taken with the chain directly into acres.

*   **Why Option 1 (86 Feet) is incorrect:** A chain length of 86 feet is not a standard or recognized length for any commonly used surveying chain.

*   **Why Option 2 (68 Feet) is incorrect:** A chain length of 68 feet is not a standard or recognized length for any commonly used surveying chain.

*   **Why Option 3 (36 Feet) is incorrect:** A chain length of 36 feet is not a standard or recognized length for any commonly used surveying chain.