This essay argues that the artisanal problems of the "practical antiquary" shaped William Blake's physiological aesthetics and his experience of "fourfold vision." As a draftsman and engraver, Blake captured three-dimensional sepulchral monuments on the flat surface of the page, offering different perspectives on the sculptural object from changing points of view-from above, from the side, in horizontal or vertical orientations. In his time as an apprentice to James Basire, Blake produced drawings of the disinterment of Edward I (1774) and funerary monuments at Westminster for Richard Gough's Sepulchral Monuments (1786) and Vetusta Monumenta (II, 1789). Building on Abigail Zitin's and Ruth Mack's work on practical aesthetics, I will trace how the technical gaze of the draftsman resurfaces in Blake's writings, from the "couches of the dead" seen through the "eternal gates" of The Book of Thel (1789) to the visionary contemplations around the death couches in The Four Zoas (ca. 1796Zoas (ca. -1807 and Milton (1804-11). As an engraver-poet who invented a medium for selfpublication, Blake sidestepped the division of labor between the empirical field worker and the gentleman author that Noah Heringman finds among the knowledge workers of antiquity. Yet the technical ways of seeing that Blake practiced during his antiquarian apprenticeship can be traced through his visionary contemplations. Thinking through technique, Blake crossed the threshold between engraver and poet and embraced a prophetic physiological aesthetics of "fourfold" vision.He was employed in making drawings from old buildings and monuments, and occasionally, especially in winter, in engraving from those drawings. This occupation led him to an acquaintance with those neglected works of art, called Gothic monuments. There he found a treasure, which he knew how to value. He saw the simple and plain road to the style of art at which he aimed, unentangled in the intricate windings of modern practice. The monuments of Kings and Queens in Westminster Abbey, which surround the chapel of Edward the Confessor, particularly that of King Henry the Third, the beautiful monument and figure of Queen Elinor, Queen Philippa, King Edward the Third, King Richard the Second and his Queen, were among his first studies.