MILNE'S PLAN of the CITIES of LONDON and WESTMINSTER, circumjacent TOWNS and PARISHES &c. laid down from a TRIGONOMETRICAL SURVEY taken in the YEARS 1795-1799
This is one of six sheets forming Milne's map of the area twenty miles around London. It was the first to make use of the 'Trygonometrical Survey' founded in 1791. This sheet covers the area to the west and south-west of the capital. It shows all the field boundaries and indicates land use with a complex system of letters and colours. The key is featured on the top corners. The borders of the map are divided in minutes and seconds, giving scale, angles of observations and magnetic variations. Thomas Milne trained as an estate surveyor and worked on the first Ordnance Survey map of Kent.