Resources

A list of all 870 county tetrads:

Resources/TETRAD List for Shropshire 870 stripped down.xls

Two key maps to show the extent of Ordnance Survey (OS) cover of Shropshire.

• Each OS map has been randomly allocated a colour and its OS map number and land-coverage are shown.
• In the top left hand corner of each ten km square (solid lines) is the square's number (to be preceded by SJ in the north of the county and by SO in the south).
• Also shown on the map are the boundaries of tetrads (dotted) with a key to the naming of tetrads top right.
• The two-character initials show the approximate positions of town-centres and of villages.

Key Map 1.  The OS 1:50,000 scale (2cm to 1km, not far off the old "one inch to the mile") 'Landranger' maps.

There are no overlaps in land-cover by 1:50,000 scale maps.

 Resources/TETRADS of Shropshire 1to50 maps.xls

Key map 2.  The OS 1:25,000 scale (4cm to 1km) 'Explorer' maps.

There is some duplication of land-cover by 1:25,000 scale maps - the southern edge of map 216 (Welshpool) and the northern edge of map 210 (Knighton) where the two cover the same ground, show by crosses.

Resources/TETRADS of Shropshire 1to25 maps.xls

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