• Antoine Lafréry (publisher)
• Jacobus Bos (engraver (printmaker))
• Michelangelo Buonarroti (architect)
• Pope Paul III (patron)

Elevation of a vault-centering device used at Basilica di San Pietro, Rome

printed 1561

• record drawing

Engraving on laid paper

sheet: 34.3 x 49.5 cm (13 1/2 x 19 1/2 in.)

DR1979:0326

• line drawing

• elevation (drawing)

• partial view
• interior view

- Sheet has an old horizontal fold and two old vertical folds through c.

signed - by the engraver, in the plate below the image, l.r.: "Iacobus Bossius Belga, Suma diligetia, circino excepit in aesq. incidit." inscribed and dated - by the engraver ? in the plate on the image, u.l.: "La presente Figura dimostra una ar= / madura ò vero Incavallatura delle / Volte Di Sa. Pietro Di Roma [...]"; u.r.: "Sara utile à qual si voglia persona / haver messo nella preesente Carta le misure antichi è moderne qual sono / Iolte da quelle stesse di campido: / glio servono à archittettj muratorj / è falegniamj & amercantj et ad altrj / artierj ch esercitiano le misure aparte : / nentj alla loro perfessione."; l.l.: "Ant.o Lafrerj Sequanj formis / Roma Anno 1561"; and in various locations: with a description of the type of measurement under each example numbered - by an unknown hand, in graphite, on the print outside the plate mark, l.r.: "83" [twice, sideways]

• architecture
• ingénierie

• vault (structural element) centering