Reference numberMOB/022
TitleSpeculum by John Hadley
DescriptionA speculum mirror for a Newtonian reflector, with skewed handle for holding and five small wooden eyepieces (lenses missing in four out of five). In a custom made wooden carry case. Speculum created by John Hadley, carry case created by the Science Museum.
Extent1 instrument, 7 parts
FormatScientific Instrument
MaterialsMetal, wood
NotesOn loan to the Science Museum 1932- 2019; SM inventory number '1932-459'
Access statusOpen
ProvenanceExact provenance unknown. Mirror and telescope apparatus first shown to the Royal Society in 1721 and likely presented to the Society at a subsequent date by Hadley himself.
Related materialWritten about at length in John Hadley's paper, 'An account of a catadioptrick telescope [...]', Philosophical Transactions of the Royal Society, vol. 32, no. 376 (1723)
URL descriptionDigital version available on The Royal Society Picture Library
Fellows associated with this archive
NA7954Hadley; John (1682 - 1744)1682 - 1744
Add to My Items

    Collection highlights

    Browse the records of some of our collections, which cover all branches of science and date from the 12th century onwards. These include the published works of Fellows of the Royal Society, personal papers of eminent scientists, letters and manuscripts sent to the Society or presented at meetings, and administrative records documenting the Society's activities since our foundation in 1660.

    The Royal Society

    The Royal Society is a Fellowship of many of
    the world's most eminent scientists and is the
    oldest scientific academy in continuous existence.
    Registered charity number 207043

    Website design ©CalmView


    + 44 207 451 2500
    (Lines open Mon-Fri, 9:00-17:00. Excludes bank holidays)

    6-9 Carlton House Terrace, London SW1Y 5AG

    Email Us →


    Subscribe to our newsletters to be updated with the
    latest news on innovation, events, articles and reports.

    Subscribe →

    © CalmView