Roman Britain (Historical Map and Guide): 7

Product Information

A small-scale guide to this photography is included in the DOS Annual Reports from 1951 to 1984, to be held by The National Archives (TNA). Other photography in the collection is shown on non-DOS cover diagrams or sortie plots produced by the originator of the photography. Summary diagrams for each country illustrate the location of all photography. The principal points of photos used in the mapping are shown and numbered on almost all DOS 1:50 000–1:125 000 scale topographic maps and provide accurate indications of the location of individual photos. Air photo mosaics and print laydowns (uncontrolled mosaics produced as map substitutes on standard sheetlines in advance of the regular mapping) are archived at the National Collection of Aerial Photography. In addition to contract photography, the collection occasionally holds cover obtained by the national survey departments, and other aid agencies such as the Canadian International Development Agency. The many existing remains of víae publicae. These are often sufficiently well preserved to show that the rules were, as far as local material allowed, closely followed in practice.

Most of the known network was complete by 180 AD. Its main purpose was to allow the rapid movement of troops and military supplies. It was also vital for trade and the transport of goods. Records of field work by the Falkland Islands Dependencies Survey and the British Antarctic Survey, formerly held by the DOS Survey Data Library, are now held by the British Antarctic Survey, Cambridge. Great Britain 1:1,000,000 (in the style of the International 1/1M. map) With the National Grid. Sheet 1 (North), Sheet 2 (South)

Colour

A guide to main areas of primary triangulation and traverse, and secondary and minor control established by Directorate of Overseas Surveys (DOS), is provided in the DOS Annual Reports from 1959 to 1984. In Britannia, [2] as in other provinces, the Romans constructed a network of paved trunk roads to (surfaced highways). In their nearly four centuries of occupation (43 – 410 AD) they built about 2,000 miles of Roman roads in Britain. They are shown on the Ordnance Survey's Map of Roman Britain. [3] This is the most accurate and up-to-date layout of certain and probable routes that is available to the general public. There are two sets of air photographs. One is held at the National Collection of Aerial Photography (NCAP) in Scotland, and the second has been entrusted to Oxford University to support global climate change research.

Four maps have been permanently preserved at The National Archives as typical examples of Directorate of Overseas Surveys (DOS) map production between 1946 and 1999:

A basic scale used on former British territories was 1:50 000. Smaller scales were used in arid lands such as British Somaliland (1:125 000) and parts of Botswana (1:125 000, later 1:100 000). Larger scales (1:25 000) in Mediterranean and Caribbean islands. "Selected" areas, and sometimes whole islands (Malta, Gozo, Bermuda), were mapped at 1:2500 scale (occasionally 1:5000, 1:2400, 1:1200) and, rarely, at 1:500 scale (Male, Stanley). The International Collection was the result of the work of the Directorate of Colonial Surveys, the Directorate of Overseas Surveys, Ordnance Survey (Overseas Surveys Directorate) and Ordnance Survey International. The history of the International Collection Great Britain 1:1,000,000 (in the style of the International 1/1M map). Sheet 1 (North), Sheet 2 (South) Between 1946 and the late 1980s, Directorate of Overseas Surveys (DOS) field parties worked towards establishing ground control (planimetric and height) for mapping, observing national primary and secondary survey frameworks, and assisting with tertiary and cadastral control and levelling. The collection includes results of control surveys by other organisations, some connected to DOS schemes and most used by DOS in its mapping programmes. The final steps used concrete, which the Romans had rediscovered (it had been used in Ancient Egypt). They seem to have mixed the mortar and the stones in the fossa. First a small layer of coarse concrete, the rudus, then a little layer of fine concrete, the nucleus, went onto the pavement or statumen. Into or onto the nucleus went a course of polygonal or square paving stones, called the summa crusta. The crusta was crowned for drainage.