Editing Hi-Tek and Stackpole recognition (section)

===Stackpole standard profile===
The most distinctive characteristic of [[Stackpole switch grid]] switches appears to be the "boss", the T-shaped portion of the centre vertical wall leading to the slider guide shaft. These appear in all standard profile Stackpole-branded keyboards, and never in any Hi-Tek branded keyboards. This alone appears to be a firm indicator of Stackpole switches, and is true regardless of switch profile or contact design.

[[File:Stackpole recognition (standard).svg|center]]

The separator bar is much narrower than with Hi-Tek sliders, and it is held by projections at each end, giving the bar a stepped appearance and the holes in the slider a characteristic shape.

Typically, Stackpole switches have rotationally symmetrical contacts, each one having one wide and two narrow fingers; this contact arrangement likely results in simplified production. In standard-profile switches, the visible portion of the contacts are also wider in the direction perpendicular to the separator bar relative to those of Hi-Tek switches.

An HP 2623A keyboard has been found with the Hi-Tek-style 1+4 finger arrangement; even so, all other characteristics are a match for Stackpole including the slider colour, the waffle frame boss, the deeper contacts and the thin separator bar.