27 sketches of scaffolds erected over trigonometric stations, chiefly on churches in the Home Counties and East Anglia: sites at Bunwell, Danbury, Gloucester, Highgate, Laxfield, Mickfield, Naughton, Tofts, Otley, Camberwell, Chelsea, St Mark's London, St Paul's Cathedral, Southwold, [Stoke], Swaffham, Tewkesbury, Thaxted, Norwich, Westminister Abbey, Wimbledon, Worcester, Pinner, Callis Wood, Watton and Hillingdon; a portable stage, 26 sheets, various scales drawn 1843-1853; zincographed and published 1863, 1865, and rezincographed 1884, 1885