1Analyse sourceOCR, page dates, scales and significant labels
2Register automaticallyMulti-pass magenta boundary detection and scale checks
3Measure featuresNearest site-boundary point, never the centroid
4Review exceptionsApprove only uncertain pages before Word export
17
1849–1850
Measured
1:10,560 · Historic map
Barrow Bridge-part-2.pdf · 8 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
2
1894
Measured
1:2,500 · Historic map
Barrow Bridge-part-2.pdf · 4 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.3175 m/pixel · scale calibrated
18
1894
Measured
1:10,560 · Historic map
Barrow Bridge-part-2.pdf · 21 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
3
1908–1909
Measured
1:2,500 · Historic map
Barrow Bridge-part-2.pdf · 8 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.3175 m/pixel · scale calibrated
19
1909–1911
Measured
1:10,560 · Historic map
Barrow Bridge-part-2.pdf · 26 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
4
1929
Measured
1:2,500 · Historic map
Barrow Bridge-part-2.pdf · 8 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.3175 m/pixel · scale calibrated
20
1930–1931
Measured
1:10,560 · Historic map
Barrow Bridge-part-2.pdf · 20 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
21
1930
Measured
1:10,560 · Historic map
Barrow Bridge-part-2.pdf · 15 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
91.3% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
5
1938
Measured
1:2,500 · Historic map
Barrow Bridge-part-2.pdf · 0 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.3175 m/pixel · scale calibrated
22
1938
Measured
1:10,560 · Historic map
Barrow Bridge-part-2.pdf · 14 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
23
1951
Measured
1:10,560 · Historic map
Barrow Bridge-part-2.pdf · 1 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
91.3% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
6
1954
Measured
1:1,250 · Historic map
Barrow Bridge-part-2.pdf · 18 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.1588 m/pixel · scale calibrated
7
1954
Measured
1:1,250 · Additional sim
Barrow Bridge-part-2.pdf · 12 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.1588 m/pixel · scale calibrated
8
1955
Measured
1:2,500 · Historic map
Barrow Bridge-part-2.pdf · 6 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.3175 m/pixel · scale calibrated
24
1955–1956
Measured
1:10,000 · Historic map
Barrow Bridge-part-2.pdf · 12 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
25
1965–1969
Measured
1:10,000 · Historic map
Barrow Bridge-part-2.pdf · 14 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
9
1974
Measured
1:1,250 · Historic map
Barrow Bridge-part-2.pdf · 1 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.1588 m/pixel · scale calibrated
10
1976
Measured
1:1,250 · Historic map
Barrow Bridge-part-2.pdf · 4 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.1588 m/pixel · scale calibrated
27
1976
Measured
1:10,000 · Historic map
Barrow Bridge-part-2.pdf · 7 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
28
1987
Measured
1:10,000 · Historic map
Barrow Bridge-part-2.pdf · 16 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
11
1992
Measured
1:1,250 · Historic map
Barrow Bridge-part-2.pdf · 14 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.1588 m/pixel · scale calibrated
12
1992
Measured
1:1,250 · Historic map
Barrow Bridge-part-2.pdf · 6 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.1588 m/pixel · scale calibrated
13
1994–1995
Measured
1:1,250 · Historic map
Barrow Bridge-part-2.pdf · 4 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.0% boundary confidence
0.1588 m/pixel · scale calibrated
29
1999
Measured
1:10,000 · Historic map
Barrow Bridge-part-2.pdf · 21 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched
30
2006
Measured
1:10,000 · Historic map
Barrow Bridge-part-2.pdf · 22 environmental detections
High-confidence magenta site boundary detected.
Registration
Automatic boundary
93.2% boundary confidence
1.2407 m/pixel · ring calibrated
250 / 500 / 1000 m rings matched