Caption: "Miniature of Richard of Wallingford (1292--1336), Abbot (1326--1336) of St. Albans, mathematician and inventor of a mechanical astronomical clock. He is shown seated at his desk measuring with a compass."
From Gesta Abbatum Monasterii Sancti Albani (History of the abbots of St Albans) (late 14th century) by Thomas of Walsingham (died c. 1422).
Credit/Permission: Thomas of Walsingham (died c. 1422)?,
late 14th century
(uploaded to Wikipedia by User:Leinad-Z,
2006) /
Public domain.
Image link: Wikipedia.
File: Art file:
richard_of_wallingford.html.