The positional accuracy of Chapman’s map of Nottinghamshire 1774

Location Modern Coordinates Chapman’s Map % error
Nottingham Castle 52o 56’ 57’’ N01o 09’ 16’’ W 52o 59.4’ N01o 07.5’ W -0.08+2.55
Southwell Minster 53o 04’ 36’’ N00o 57’ 14’’ W 53o 06.6’ N00o 55.4’ W -0.06+3.20
Hardwick Hall 53o 10’ 08’’ N01o 18’ 31’’ W 53o 12.2’ N00o 16.8’ W -0.06+2.25
Gringley on the Hill 53o 24’ 25’’ N00o 53’ 35’’ W 53o 26.2’ N00o 51.9’ W -0.06+3.14
Newark, St Mary’s Church 53o 04’ 36’’ N00o 48’ 30’’ W 53o 06.6’ N00o 46.7’ W -0.06+3.71
Blyth, St Mary’s Church 53o 22’ 38’’ N01o 03’ 42’’ W 53o 24.5’ N01o 02.2’ W -0.06+2.35
Retford, St Swithen’s Church 53o 19’ 01’’ N00o 56’ 27’’ W 53o 21.4’ N01o 55.0’ W -0.06+2.57
Wysall, Holy Trinity Church 52o 59’ 19’’ N01o 06’ 16’’ W 52o 52.8’ N01o 04.5’ W -0.06+2.67
Eastwood, St Mary’s Church 53o 01’ 03’’ N01o 18’ 22’’ W 53o 03.3’ N01o 16.6’ W -0.06+2.25
Belvoir Castle 52o 53’ 40’’ N00o 46’ 57’’ W 52o 56.3’ N00o 45.7’ W -0.06+2.66
Kirkby, St Wilfred’s Church 53o 05’ 50’’ N01o 16’ 08’’ W 53o 07.9’ N01o 14.2’ W -0.06+2.54

 

Average % Error

North -0.06
West +2.72

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