Photographic field scale for geography studies

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A photographic scale tool for geography is a device used to provide a visual reference for determining the size of objects in a photograph. By providing a visual reference for size a photographic scale tool plays a vital role in geographical studies enabling accurate measurements, comparisons, and documentation of features in photographs. 

 

This tool also contains space to glue a 8x2 magnet to assist in detecting if a sample rock has magnetic attraction.