A 1794 John Arnold pocket chronometer, known as Mr. Arnold, served as the primary instrument for a unique business venture that spanned over a century. By verifying this timepiece daily against the Greenwich Observatory clock, Elizabeth Ruth Naomi Belville sold the accurate time to hundreds of London clients until her retirement in 1940.
Origins of the Time Service
The service originated in 1836 when John Henry Belville, an employee at the Greenwich Observatory, began setting his watch to Greenwich Mean Time. He established a subscription model for 200 clients, personally traveling to their locations to calibrate their clocks. Following his death in 1856, his widow, Maria Elizabeth, secured the right to continue this livelihood. She operated the business until 1892, at which point their daughter, Ruth Belville, assumed control of the operations.
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Ruth Belville maintained the business model by visiting the Observatory at 9 a.m. to synchronize her watch. She charged approximately £4 per year for the service, providing a cost-effective alternative to the Post Office subscription, which cost £15. Even into her eighties, Belville continued to travel approximately twelve miles from her residence to keep the schedule. The chronometer she utilized, No. 485/786, was originally crafted for the Duke of Sussex and later rebuilt circa 1840.
Market Competition and Publicity
In 1908, the business faced opposition from St John Wynne, a director of the Standard Time Company. Wynne criticized Belville during a speech at the United Wards Club, characterizing her methods as obsolete and questioning her business practices. Although his comments appeared in The Times, the publication did not disclose that Wynne was a competitor. The resulting media attention led to an influx of public interest rather than a decline in patronage, with Belville noting that the coverage provided effective advertising for her service.
Legacy of the Chronometer
Upon her death in 1943 at the age of 89, Belville bequeathed the John Arnold watch to the Worshipful Company of Clockmakers. The silver-cased instrument, measuring 78 mm by 56 mm by 25 mm, functioned as the core asset of the enterprise for generations. Belville is buried at Streatham Park Cemetery, having concluded her career in Beddington after four decades of managing the family service.
Fast facts
- Born: 1854, Greenwich
- Died: 1943, Beddington
- Service duration: Until 1940
- Instrument: 1794 John Arnold pocket chronometer No. 485/786
- Annual subscription cost: Approximately £4
- Burial site: Streatham Park Cemetery
Questions readers ask
How did Ruth Belville verify the time?
She visited the Greenwich Observatory by 9 a.m. each morning to set her watch against the official observatory clock.
What happened to the watch after she died?
The watch was left to the Worshipful Company of Clockmakers.
