Control Sales
Ordnance Survey still offer traditional survey control information with the following products being available

• Horizontal control - (OSGB36 triangulation station coordinates & description) - £78.00 plus VAT
• Vertical control - Bench mark lists being site-centred (7 closest to a given grid reference) or a 1km square bench mark list - both £21.00 plus VAT for either option
• Bench mark height history - £78.00 plus VAT

For more details contact us by email maps@tridentmaps.co.uk

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