Studio_Mapping Icons Four.

I have created a number of different icons that i might use. The one i prefer after speaking to some colleagues is the box with the "x" in the centre and code. A number of codes will have to be sorted for the equipments. Im not sure if i want a individual code for each piece of equipment or just a code for the type. Could be a bit too much and a little hard for the user of this map to understand if it was a individual code.