Ag-Chem gives this portable multi-slide chart to farmers who rely on the company's spray applicators and ground-driven pumps for fertilization and irrigation. It packs a manual’s-worth of data into a streamlined tool that delivers instant, situation specific answers anywhere. From anywhere in the field – without batteries or expensive mobile devices -- ag professionals can determine the correct nozzle and application rate for their pumping system of choice. Ask about special coatings and materials that can make these charts even more durable.