GOPHER is actually two separate search engines.
A part number(s) lookup search engine
(or)
A parametric search engine
The two search engines operate exclusively independent of each other.
Part Number Search Engine
If you enter in one or more part numbers in the part number box, then the search is performed using a part number search and all parametric selections are ignored.
Parametric Search Engine
If you do NOT enter a part number in the part number box, then you are performing a parametric search and the parametric selections are used to determine the search results returned.