A portable shrink tubing marking device comprised of a hand held grip mechanism to transfer printing material from a tape supply thereof onto a preformed roll supply of flattened tubing, utilizing a character selection and cut-off wheel and dual cartridges carrying the supplies of shrink tubing and printing...http://www.google.com.au/patents/US4239399?utm_source=gb-gplus-sharePatent US4239399 - Portable shrink tubing marker gun
