That's a photo of the cab label, which isn't directly relevant right now, and the tube make and model, which is nice to have just in case. What we really need, as Ken notes, is the make and model of the chassis. If you're confused, see my post above for more description, and then read at least a few posts down that thread Ken linked to, please.
Monitor = tube + chassis. What we need is info about the chassis. Failing a make and model, detailed photos will be needed.