A line of Class F cast iron grip handle weights that come in 10 to 100 lbs. sizes for calibrating and field testing all types of commercial weighing devices is available from Alliance Scale, Inc. of Canton, Massachusetts. Alliance Grip Handle Weights are Class F cast iron painted, density 7.2 for scale calibration and finished with a special etching process, then coated with chip-resistant paint that conforms to NIST Handbook 105-1 standards. Available in 10 to 100 lbs. sizes in inch, metric, and troy ounces, they are ideal for calibrating, testing, and spot-checking all types of scales. Suitable for validating legal-for-trade and other scales, Alliance Grip Handle Weights are frequently used by equipment installers, service technicians, and state and local officials.  Typical applications include verification of setup and checking scales prior to the start of a work shift in order to identify problems before scheduling maintenance.