LocationEngland
LB Waltham Forest
Leyton (E10)
Meridian House, Leyton Sixth Form College, Essex Road,
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTQ 38520.88198
(538520,188198)
WGS84 lat/long51.575636, -0.002453
TypeSchool | Building name
Marking date1996
AccessRestricted, but visible from public road
Greenwich Meridian Marker; England; LB Waltham Forest; Leyton (E10)
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South
South

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The telescopes on the wall of the building represent two of the Greenwich instruments. The one on the right is the Troughton 10-foot Transit Instrument, which defined the Greenwich Meridian from 1816–50. The one on the left is Hooke’s 10-foot Mural Quadrant. Made in 1676, it failed to work properly and was soon abandoned by Flamsteed for whom it was made.


Troughton 10-foot Transit Instrument
Hooke’s 10-foot Mural Quadrant