The classification adopted by a Local Authority for non-automatic weighing instruments (NAWI's) that are within its jurisdiction often depends on the type and quantity of standard weights required to carry out their verification. Typically at the Local Metrology Authority of Naples, the following classification criteria are used: Small capacity NAWI: Class Ⅲ accuracy weighing instruments up to 20 kg capacity. For these instruments, one officer can perform the verification alone according to the relevant technical standard by using a complete set of M_1 20 kg standard weights.
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