It is necessary to periodically obtain topographic maps of the geographical and environmental characteristics of tidal flats to systemically manage and monitor them. Accurate digital elevation models (DEMs) of the tidal flats are produced while using ground control points (GCPs); however. it is both complicated and difficult to conduct GPS surveys and readings of image coordinates tha... https://allfixelectricales.shop/product-category/dryer-idler-pulley/