4 ft purlin spacer guides

[Toolmaker51]

mwmkravchenko, An aside to your history reminds me of a similar situation, yet poorly done continuation of the family business.
1 example. Weldment is not a three syllable word. Yet 3 generations still try forcing "weld-e-ment" it into the English language. Just cause it'll google does not make it legit.
Same location, where "we always did it this way" is the by-word. No horizontal surfaces are clear for staging short run jobs, filled with baby boys scattered tools. But the walls and most vertical surfaces are covered with the most uniform grime imaginable.