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 differentiaded by actuation type, actuating element material, scale type, dial size, case material, case surface treatment, diameter, depth, bezel type, material, surface treatment, connection quantity, connection type, connection location, connection size, mountint method, bolt circle diameter, mounting hole quantity, and mountin hole diameter