If you are looking for an "article" related to these types of high-spec components, you might find the following topics relevant: 20798 | Lee Supply
The code does not appear to be a single widely recognized article title, but it corresponds to several specific industrial and technical products. 20798-0029950
: A high-precision measuring tool with a resolution of 0.0005" and an IP67 rating for water and dust resistance. Viega ProPress Copper Fitting Go to product viewer dialog for this item. If you are looking for an "article" related
: Part number refers to a lead-free, 3" x 3" x 1-1/2" reducing tee used in potable water and hydronic heating systems . Suggested Reading: Precision in Modern Engineering : Part number refers to a lead-free, 3"
Depending on your interest, here is information related to those products or a suggested article on a related technical theme: Associated Products Starrett Electronic Caliper (Model 20798)