The same is true for the horizontal loom with treadle and the spinning wheel; stone
castlery and the combining of pointed arch, ribbed vault, and flying buttress into Gothic structures; the gunpowder cannon; ships with added masts, sails, and a mariner's compass; presses, papers, and inks variously employed; and the mechanical clock, the appearance of which may "in the advance of Europe to the forefront of world technology [be viewed as] a decisive moment" (210).