MRC:
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.ZZZY
Reference Number Differentiating Characteristics:
As differentiated by scale type, scale name, scale range, scale accuracy, graduation unit, scale smallest increment, scale inscription/background color, dial size, case material, case surface treatment, diameter, depth, bezel type, material, surface treatment, connection quantity, connection type, connection location, connection size, and mounting method