What is the length of a chain used in surveying?

The length of a chain used in surveying is traditionally 66 feet. This measurement stems from the use of a surveying chain known as a "Gunter's chain," which was historically employed in land surveying and is divided into links, each link measuring 7.92 inches. The total length of 66 feet is equivalent to 100 links. This standard provided a practical and convenient measure for surveying land, allowing surveyors to easily calculate areas and dimensions while maintaining accuracy in their work. This understanding is vital in the context of property measurement and land assessment, making the 66-foot length a foundational piece of knowledge in surveying practices.