Equipment
Chain
A chain is made of steel, which has good stability and less bulk than a Stylon reel, but is more prone to damage and wear.
Examples Of Usage
Chains can be used for:
- Measuring distances for a variety of survey purposes, such as the length of a base line between two survey stations.
- Setting out a chain line as part of a chain and offset survey to carry out, for example, detail mapping.
Factors Which Influence The Use Of Chains
- Measured distances are limited to the length of the chain, usually 50 or 100 metres.
- Clear paths of travel, unimpeded by physical obstacles, are needed between the end points of the distance.
- Large undulations in ground level can make chaining difficult.
- Distance accuracy is dependent on correct field procedures and often the application of corrections for various factors.
Survey Methods Used For
Chains are used for the measurement of linear distance.
