Stainless Steel Cylindrical Weights are legal for trade, which means their design meets specifications as outlined in NIST Handbook 105-1 and are approved to be used on legal for trade devices within the United States. Weights 5 kg/10 lb and below must be made of stainless steel of quality no lower than 300 series. Adjusting cavities are typically on the top of the weight and must be tamper resistant. Stainless Steel Class F Test Weights may be used to test most accuracy Class III scales, all scales of Class IIIL or IIII, and scales not marked with a class designation. Class F is also acceptable for use in verifying scales that have 0.1% accuracy or lower. Class F Test Weights are primarily used to test commercial weighing devices by state and local weights and measures officials, device installers, and service technicians. Suggested markets for Stainless Steel Test Weights include, but are not limited to, Hospitals and Food Services. What's Included: all weights include noted documentation of accuracy from the vendor, not supplied in a case Stainless Steel Test Weights are primarily used to test commercial weighing devices by state and local weights and measures officials, device installers, and service technicians.