[tz] St Andrews meridian in the 17th century

[Tony Finch]

Peter Ilieve <peter at aldie.co.uk> wrote:
>
> St Andrews, on the Fife coast in the east of Scotland, had a meridian
> line set up some 200 years before Greenwich.

Dunno how they got 200 years from the difference between 1673 (Gregory's
St Andrews meridian) and 1721 (Halley's transit circle) or 1750 (the
Bradley meridian, used for the Ordnance Survey).

Tony.
-- 
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