Zenith sector

Plumb bob weight from zenith sector telescope which was constructed by George Graham in 1727 for Bradley's personal use in studying the parallax of the star Gamma Draconis following work he had begun on the detection of parallax at Kew with Samuel Molyneux.

Object Details

ID: AST0992.1
Type: Telescope
Display location: Display - ROG
Creator: Graham, George
Date made: 1727
Credit: National Maritime Museum, Greenwich, London
Measurements: Overall: 58 mm; Diameter: 40 mm
Parts: Zenith sector (Telescope)
  • Zenith sector (Telescope) (AST0992.1)

Your Request

If an item is shown as “offsite”, please allow eight days for your order to be processed. For further information, please contact Archive staff:

Tel: (during Library opening hours)

Click “Continue” below to continue processing your order with the Library team.