Temporary observatory for pendulum observations, Sumatra mb-artistname Philibert Boutrois Adam the water-oak (Catesby's identifications

the water-oak (Catesby's identifications

One of the City giants (Gog

A 4/4 Morgan during the annual trial between London and Land's End in Cornwall

Gunpowder Alley

Temporary observatory for pendulum observations, Sumatra mb-artistname Philibert Boutrois Adam the water-oak (Catesby's identificationsSection through a tent observatory used for pendulum observations, indicating the location of main instruments (clock, pendulum, telescope and transit instrument) and the masonry pillar for mounting the pendulum clock. This is accompanied by a plan view of the pillar. Inscribed: 'Canvas Observatory' and 'Plan of the Wall'. Figure no. 2 from Report of the length of the pendulum at the equator made on an expedition from the observatory at Madras, by