Keywords: Richard of Wallingford.jpg Miniature of Richard of Wallingford Abbot of St Albans mathematician and inventor of a mechanical astronomical clock He is shown seated at his desk measuring with a pair of compasses Title of the book History of the abbots of St Albans Author Thomas of Walsingham Date 14th century Language Latin The first version is a lossless adaptation from http //imagesonline bl uk/ service search action do_quick_search language en q Wallingford The current version was digitally changed for better visualization From The British Library; Record Number - c3919-08; Shelfmark - Cotton Claudius E IV; Page Folio Number - f 201 PD-Art PD-old-100 1500 Astronomy in medieval miniatures Medieval miniatures of monks Studies in art Medieval miniatures of historical persons Compasses in art Richard of Wallingford Artworks missing infobox template |