V2002.186 Model of Spencer-Jones' Reversible Transit Circle (by Cooke, Troughton & Simms). Model painted grey except for wooden wheels at centre and one at end of telescope. With model figure.

The label that accompanied this model in the 1975 tercentinary exhibition read:

THE SUCCESSOR TO THE AIRY TRANSIT CIRCLE
The Cooke Reversible Transit Circle 1933

After the Airy Transit Circle had been in operation for about 80 years, a replacement was built. The Cooke Reversible Transit Circle was first used at Greenwich in 1936 when the pendulum clock was the most precise man-made timekeeper available. It was in operation at Herstmonceux from 1957 to 1982 with increasingly sophisticated means of recording. As with the Airy Transit Circle, the actual observations with the Cooke were made visually. Astronomers from the Royal Greenwich Observatory together with their Danish and Spanish colleagues now make transit observations from the fully automated Carlsberg Automatic Meridian Circle on La Palma.