each tapered A-frame with graduated bars for supporting crawl-boards at intervals

Such trestles are the pre-cursors of the “scaffold tower” and enabled masons, painters, bricklayers etc. to work at height. Obviously, these are old and are sold on the basis of their decorative merits rather than safe working directives. We’ve seen such trestles used for events – be it cocktail bars, serving tables or pop-up shop counters.