Spectacular Enlightenment sundial acquired by National Museums Scotland

Press images are available here.

Video available for press use includes:

• Interview clips of Principle Curator Dr Rebekah Higgitt and b-roll of the Ilay Glynne dial at the National Museums Collection Centre
• A packaged edit of the interview with Dr Rebekah Higgitt 

The Ilay Glynne dial, made around 1715, was used to measure local time from the Sun, providing the most accurate means of setting clocks available at the time. It could be used at any latitude, and its form models the celestial sphere, showing the Sun’s apparent motion around the Earth.  

The acquisition of the dial, which has important connections to post-Union Scotland, has been supported by the National Heritage Memorial Fund and Art Fund. 

The dial was commissioned by and belonged to Archibald Campbell, Earl of Ilay and later 3rd Duke of Argyll (1682-1761). Ilay was hugely influential figure in post-Union Scotland. He had control over royal patronage in Scotland, and managed Scottish affairs, making him the most politically powerful figure in the first half of the 18th century. He was a founder and the first governor of the Royal Bank of Scotland. His likeness used to appear on all RBS banknotes, and still appears on the £100 note today. Through his patronage, including at Scottish universities, he became an important sponsor and promoter of the culture of the Scottish Enlightenment  

It is signed by Richard Glynne (1681-1755), a successful and well-regarded maker of mathematical instruments and a member of the Clockmakers’ Company. In his business, skills and innovations, Glynne was closely integrated with a growing community of British instrument makers and produced instruments of outstanding quality, of which this dial is the most important surviving example. 

The dial is of a type first made for figures such as Peter I of Russia and Queen Anne’s consort, Prince George of Denmark, suggesting Ilay commissioned it from Glynne as a projection of his reputation as a nobleman of wealth and status. Of imposing size, in brass and silvered brass, it is surmounted with the Ilay coat of arms, with leopard supporters, coronet and motto, and the central plate is decorated with the monogram ‘AC’, for Archibald Campbell, beneath an earl’s coronet.    

Dr Rebekah Higgitt, Principal Curator of Science at National Museums Scotland, said: 

“We’re delighted to be able to acquire the spectacular Ilay Glynne dial and hugely grateful to the funders who have made it possible. It is an addition which reflects the breadth of our collections, being at once a significant scientific instrument, an object of great beauty and one with strong connections to key developments in Scotland’s history.” 

Dr Simon Thurley, Chair of the National Heritage Memorial Fund, said: 

“The Ilay-Glynne dial is a magnificent example of scientific endeavour, and we are delighted to have supported National Museums Scotland to acquire it for a UK public collection. Not only is it an exquisite instrument, but its provenance offers an opportunity to explore important stories about scientific, intellectual and cultural currents that saw the birth of the Scottish Enlightenment.” 

Jenny Waldman, Director, Art Fund said: 

“This stunning sundial offers a unique insight into scientific innovations in 18th century Scotland. The precision and detail of the craftsmanship is exquisite, a true work of art. I’m so pleased that Art Fund has been able to support National Museums Scotland to acquire this remarkable object for their permanent collection, ensuring it will continue to enlighten visitors from Scotland and beyond on public display in the Spirit of the Age gallery.” 

The Ilay Glynne dial reveals the Earl of Ilay not just as the politically powerful and wealthy figure he is best known as, but also as a patron of arts, science and learning. It is through this patronage that Ilay is widely believed to have contributed to the Scottish Enlightenment. Those he supported include philosopher Francis Hutcheson, chemist Joseph Black, astronomer Alexander Wilson, poet Allan Ramsay and other ingenious individuals who created emblematic works of 18th-century Scottish culture.   

In Scotland, Ilay pursued agricultural and infrastructure projects, the development of fisheries and promotion of the linen trade. As founder and governor of the Royal Bank of Scotland and the British Linen Company he aimed to encourage others to invest and improve. Some of these investments were in overseas trading companies, such as the African Company, East India Company and South Seas Company, which profited from colonisation and the exploitation of enslaved people, an important reminder of a key source of wealth that underlay economic and cultural change in 18th-century Scotland.   

The dial has undergone extensive cleaning and conservation work, and is now on permanent display in the Spirit of the Age gallery in the National Museum of Scotland. Admission is free