Gas Regulator Question

[old tanker]

IF, you are absolutely driven to fill in the engravings on the gas regulator, at least get the proper tool for the job. A more "legitimate" use is to renew the markings on a steel ruler or a machinery dial, plenty of folks have also used them to make the markings on guns stand out for photagraphic reasons. Good for illustrating users' manuals or documenting stuff for insurance.

http://www.markal.com/lacquer-stik/