One more thing about Davidson marking inks: They aren't very expensive (given 
that they last for years if you just remember to cap the bottles when you're 
through with them), but the company doesn't sell through vendors, and wants 
cash on the barrelhead - no purchase orders, no billing. You may find this 
peculiarity to be beyond the comprehension of management types.

Bob Richmond
Samurai Pathologist
Knoxville TN