Examples of the time taken from proposal to published map

 

  Surveyor Area(sq miles) Survey Proposed Map Published Sheets
1 inch maps
Westmoreland (1) 783 1768 1770 4
Leicestershire Whyman 800 1775 1777 4
Nottinghamshire Chapman 825 1774 1776 4
Cheshire Burdett 1,027 1772 1777a 4
Derbyshire Burdett 1,029 1763 1767
Staffordshire Yates 1,171 1768 1775 6
Cumberland (2) 1,516 1770-71 1774 6
Lancashire Yates 1,880 1775 1786b 8
Northumberland Armstrong 2,018 1766 1769 9
Lincolnshire Armstrong 2,646 1777 1779 8
Yorkshire (3) 6,066 1767-70 1771-72 20
2 inch maps
Kent Andrews 1,555 1765 1769 2X
Essex Chapman(4) 1,542 1772 1777c 2X
26 inch map
London Rocque 15 1737 1746d 20

 

Notes:

(1) John Ainslie & Thomas Donald, (2) John Ainslie & Thomas Donald, (3) John Ainslie & Thomas Donald & Joseph Hodskinson, (4) John Chapman & Peter André

a) Survey completed by 1775, b) Survey completed by 1778, c) Survey completed by 1774, d) Survey completed by 1741

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