Lecture: St Albans Ordnance Survey Mapping with special reference to the centenary of the National Datum

at Zoom

Speaker: Frank lddiols

This lecture begins with a reference to the National Tidal Observatory of the Ordnance Survey (OS) in establishing the zero point for the National Datum used since 1921. The remainder of the talk will consider OS mapping relating to St Albans through the various scales and development of mapping for a variety of uses over time.

Frank holds an Honours Degree in Education and has worked in the construction industry gaining various professional qualifications. He has lectured on construction subjects from craft to degree level. He has an interest in maps, particularly of London, Hertfordshire and St Albans especially those showing bench marks. He is a member of SAHAAS Council and Clock Tower Joint Committee and volunteers at the Society’s Library.

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