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A band chain, often referred to as a steel tape, is a type of measuring instrument used for precision measurements. Here are the key details and characteristics:
- Material: Band chains are typically made of steel, which provides durability and accuracy compared to ordinary chains made of other materials.
- Accuracy: The steel construction allows for more accurate and consistent measurements, as it minimizes stretching and deformation that can occur with other types of materials.
- Structure: Unlike a chain made of linked segments, a band chain is a continuous steel tape, which ensures smooth and precise measurements over longer distances.
- Graduations: The tape is usually marked with precise graduations (in units such as feet, meters, or specific subunits), allowing for accurate distance measurement.
- Flexibility: While providing rigidity for accurate measurements, the band chain is also flexible enough to be rolled up for easy storage and transport.
- Applications: Band chains are commonly used in surveying, construction, and other fields where precise distance measurements are critical. They are favored for tasks that require high accuracy, such as land surveying and laying out construction sites.
- Handling: Proper care and handling are essential to maintain the accuracy of the steel tape, including keeping it clean, avoiding kinks or bends, and storing it properly when not in use.
In summary, a band chain or steel tape is a highly accurate and durable measuring tool used primarily in surveying and construction for precise distance measurements. Its steel construction and continuous tape design make it superior to ordinary chains for tasks requiring high precision.
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