Another extremely flexible lighter-weight structural tube fitting standard that’s widely available is the 1.5” tubing used for drum racks. Not sure if there’s a broader standard that the musical instrument industry is building off there.
Was pleasantly surprised recently to find that the same diameter of fittings was used in an adjustable monitor stand, so if you wanted to mount a cowbell above your dual screen mount the fittings are easily combined.
Was pleasantly surprised recently to find that the same diameter of fittings was used in an adjustable monitor stand, so if you wanted to mount a cowbell above your dual screen mount the fittings are easily combined.