:*Much of the original content seems directly copied from http://www.kicthermal.com/products/pwi-ds.html?cat=0 (towards end of page). Most webfinds seem to derive from literature from a single company, so is this thing generally used? It does seem generally applicable in quality control and statisticas provided a more general context can be supplied.
:*Can anyone explain the "+2" in the formula? This seems to rely on the units being of a certain type.
[[User:Melcombe|Melcombe]] ([[User talk:Melcombe|talk]]) 10:36, 30 October 2008 (UTC)
::Its divided by 2. The dots on the division sign are not very clear. [[User:Zithan|Zithan]] ([[User talk:Zithan|talk]]) 12:53, 8 November 2008 (UTC)
