Now you can see exactly how many gallons per acre are being applied. No more need to look up complex calibration tables or charts. Simply attach the calibration bottle to any nozzle outlet on your sprayer. Travel a test distance of 150 feet, then read the actual spray rate per acre on the bottle. Correct calibration of your sprayer is crucial to ensure proper performance of your agri-chemicals. USA made.
2013 Master Catalog: Page 336