The archipendulum is an ancient ancestor of the spirit level and astrolabe, and was used to check whether a line was horizontal or at a desired inclination...

placed against a wall, the plumb line would indicate a vertical line. An archipendulum, an A-frame level with a plumb line hung from the vertex was also used...

Italian flag with the pole surmounted by a Phrygian cap and with an archipendulum, a symbol of social balance, was a symbol of the Sapri expedition, or...

published in 1551, although the basic principle is the same as that of the archipendulum used in constructing the Egyptian pyramids. There is strong evidence...

Art of Navigation) published in 1551, based on the principle of the archipendulum used in constructing the Egyptian pyramids. However, the first altitude...