— establish a working definition for switches and their constituent parts and identify the main types;

— specify the minimum requirements for the manufacture of the switches and/or constituent parts;

— specify codes of practice for inspection and tolerances of both full and half sets of switches and their constituent parts;

— establish the limits and scope of supply;

— list the methods by which switches and their parts should be identified and traced;

— list the different and varying ways by which switches can be described using the following parameters: