Henry Kater's telescope Size:Standard: 6 x 4in View with wharves in the

View with wharves in the foreground and signs for Bull Wharf

Plate 341 from chapter 131 of Gleanings of natural history

showing the area between the end of the Strand and St Paul's Cathedral

puts on a record in a London restaurant whilst having lunch with friends

Henry Kater's telescope Size:Standard: 6 x 4in View with wharves in theTelescope used by Henry Kater for pendulum observations. Geodesist and metrologist Henry Kater (1777 1835) invented Kater's pendulum in 1817 which enabled the strength of gravity to be determined. This sight was used to view the pendulum during observations in order to avoid parallax error. ca. 1820