I used to use a Brady machine for labelling cables up - they printed up to four lines onto a white label that then had a clear wrap. They were really good. Seeing the label machine cassettes reminds me, not sure if Brady was the same, but I pulled the spent cassette apart once at work to see how it worked. Quite interestingly the spent reel contained a negative of everything that had been printed: about half was labels for the workshop, people's tool boxes etc and the other half was very obviously for personal use outside of work !