
Clocks · Clock
Reconstruction of Dondi clock, and parts in cardboard box
- Maker / attribution
- Thwaites and Reed Limited (maker); Giovanni Dondi dall'Orologio (maker)
- Date
- 1974
- Historical period
- Quartz Revolution (1969 – 1990)
- Country of origin
- Unrecorded in source
- Place
- Brighton
- Object type
- Clock
- Holding institution
- Science Museum Group, London
- Accession / object no.
- 1974-386
- Credit line
- Thwaites and Reed Limited
- Catalogue title (original)
- Reconstruction of Dondi clock
Record summary
Held and catalogued by Science Museum Group, London (object number 1974-386), this is a clock by Thwaites and Reed Limited, made in Brighton, dated 1974. The Atlas places it in the Quartz Revolution period (1969 – 1990) of its Clocks collection. The record is illustrated with 4 photographs.
Assembled from the source record's structured fields. Dates and attributions are given as the source states them; where a field is missing the Atlas leaves it blank rather than estimating.
Catalogue description
The source record does not include a narrative description. The structured fields above are reproduced from it.
Historical context
Quartz Revolution (1969 – 1990)
Seiko's Astron begins mass quartz timekeeping; traditional industries contract sharply.
Quartz movements and digital displays made accurate clocks cheap and ubiquitous after the early 1970s. LED and LCD clocks, clock radios and radio-controlled clocks appeared, while traditional mechanical clockmaking contracted sharply in Germany, France and Britain.
Read the period in the timelineMore clocks from this periodEarlier: Modern Mechanical Horology
Atlas type guide
Domestic clocks
A clock combines four systems: a source of power (falling weight, coiled spring, or later electricity), a gear train that divides time, an escapement and oscillator that regulate it (foliot, pendulum or balance), and an indicating system of dial and hands or a bell. Its history runs from the large iron weight-driven clocks of the late thirteenth century to Renaissance spring-driven table clocks, the pendulum revolution of 1656, the factory clocks of the nineteenth century and electric and quartz clocks of the twentieth.
Domestic clocks also reflect regional furniture and decorative traditions — English longcase and bracket clocks, French pendules, Viennese regulators, Black Forest and American shelf clocks — and therefore record changing tastes as much as technical progress.
What to look for
- How the clock is powered: weights, spring barrel, fusee, electric coil.
- The oscillator: foliot, short pendulum, long seconds pendulum or balance.
- Whether it strikes: hour only (count wheel) or hours and quarters (rack striking).
- The maker or retailer's name on dial and movement, and any factory trademarks.
- Signs of alteration — replaced dials, converted escapements, 'married' cases.
Dating clues
- Before 1656 clocks used foliots or balances; after, most domestic clocks have pendulums.
- Anchor escapements spread after c. 1670; minute hands became common at the same time.
- Factory production in America and Germany transformed prices after c. 1840.
General guidance written by the Atlas editors about this kind of object. It is not a statement about this particular piece; for that, rely on the source record above and on physical examination.
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