Alessandro Rigotto

The contribution

Rigotto's named role is engineering. Ferraris is named for design. That distinction is unusually useful: it allows an article to credit the visible forms and the mechanical realization without assigning both automatically to the founder of the business. 2

How it works

Monza combines a mechanical clock with an exterior whose structure draws attention to the mechanism. Its engineering and design are separately credited, making the problem one of integration rather than a claim that either contributor invented the pendulum or the Graham escapement. 2

The pendulum supplies the recurring motion used to regulate the clock. The escapement connects that oscillation with the train rather than allowing the stored energy to run the hands freely. Monza's open construction makes the pendulum, escapement region and gearing available as separate subjects for observation. 2

The specified combination is a Graham escapement, Invar rod and an asymmetric lateral-push fork with ruby adjustment screw. Rhodium-treated gearing, red anodized aluminium hands and steel bearings belong to this model's material record. Exact tooth geometry, train ratios, fork adjustment range and manufacturing tolerances are not published in the examined page. 2

What the evidence shows

The maker supplies a realized model, dimensions, a 15-day reserve and an 8,180-beats-per-hour specification. Those figures identify the version and its stated operation, but they do not constitute a chronometric trial. 2

The named Graham escapement is a pre-existing mechanism type, not evidence of a new escapement invented by Rigotto. The contribution is its engineered integration into this clock. The source does not provide matched rate comparisons with another pendulum-clock design. 2

The page lists one unlabelled numerical item that is not interpreted here as mass. No transport-shock, thermal or long-duration rate tests were recovered. It would be inappropriate to turn use of Invar into a quantified temperature-performance claim without further evidence. 2

Research limit: No independent performance tests; unlabelled figure deliberately excluded.

Why it matters

Monza provides a concrete example of Rigotto's clock engineering with a named design collaborator. Its significance in this selection is the realizable mechanism-and-case integration, not an unverified invention priority or commercial sales claim. 2

Research limit: Editorial assessment.

What to look for

The official images and description identify a visibly separate pendulum, red hands, exposed gearing and wing-like exterior forms. Those observations should be tied to Monza; Celestial Infinity's star disc and ten-day reserve do not belong to this clock. 2

Research limit: Published-description guide; no separate pixel-level inspection completed.

The contribution

Rigotto's engineering is expressly credited alongside Ferraris's design and the Benjamin Chee Haute Horlogerie collaboration. These named roles prevent the manufacturer's founder from absorbing the whole project's authorship. 3

How it works

This project brings a large celestial display into a visible mechanical clock. Its engineering questions concern how the clockwork, pendulum and additional display are integrated. The source does not state an accuracy problem that the star disc was intended to solve, so no such motive is inferred. 3

The pendulum clock provides the mechanical timekeeping foundation, while the large rotating northern-sky disc adds a second visual subject. The official page identifies epicyclic gearing and two independent dials, but it does not give enough gearing or calibration information to explain a precise astronomical relationship between all the displays. 3

The star disc is specified at 308 mm in diameter and described as anodized aluminium with engraved, enamel-filled areas. The clock uses a Graham escapement and is listed at 8,180 beats per hour with a ten-day reserve. Palladium treatment and polished pivots and columns belong to the stated finish, not independently measured surface quality. 3

What the evidence shows

The official product record establishes a realized collaborative clock with specific dimensions and display construction. It does not supply a controlled rate test, a celestial-display calibration record or a production total. 3

Celestial Infinity is not a licence to transfer specifications among MOM's clocks. Its ten-day reserve differs from Monza's published fifteen days, while the large star disc is its own identifying feature. No universal improvement over prior astronomical clocks is established. 3

Calling the disc astronomical in appearance is not the same as proving an astronomical indication to a specified period. A future technical article needs the rotation ratio, reference orientation, setting method and limits of calibration before making sidereal-time claims. 3

Why it matters

The contribution demonstrates Rigotto's credited engineering in a collaborative display-intensive clock. Its place in this selection rests on named responsibility and the specific object, not on unverified accuracy or rarity superlatives. 3

Research limit: Editorial assessment.

What to look for

The maker's illustration can be used to identify the large northern-sky disc, separate dials and sculptural housing. A still image cannot establish the disc's period. Its 308 mm dimension and material construction come from the accompanying technical description. 3

Research limit: Published-description guide; no direct handling or independent astronomical demonstration.

The contribution

Rigotto's founding role is explicit. It does not authorize the claim that he invented every mechanism used by the business. In particular, the company's own account retains Strutt and Wigston's historical work and, on named products, distinguishes designer and engineer. 142

AHCI dates foundation to 2016. The sources examined do not date each Libra variant or document the firm's finances, staffing or output. A company founding date is therefore retained separately from unestablished product launch dates. 1

How it works

The organizational opportunity was to establish an independent clockmaking practice rather than remain only a supplier of engineering work. AHCI describes that career transition. The company then presented contemporary objects that openly engaged with older mechanical-clock ideas. 14

The practice gives a continuing organizational home to clock development. Libra illustrates the programme through an exposed mechanism and a documented reinterpretation of historical epicyclic clockmaking. Explaining that relationship is different from attributing the original planetary-gearing principle to the modern founder. 5412

Libra's maker description specifies spring drive, an eight-day reserve, glass plates, a Graham escapement and a left-side Invar pendulum. The original Italian reference to 'ruotismo di messa all'ora' is not expanded into an unsupported detailed setting-train explanation. A full construction drawing and personal task allocation remain missing. 5

Research limit: Company-level context; no sole-inventor claim or uninspected gear ratios.

What the evidence shows

The named practice and its documented collection establish a realized organizational programme. They do not prove a production volume, profit figure or sole authorship of every branded model. 1542

MOM explicitly identifies historical predecessors rather than presenting the epicyclic principle as wholly new. Its described changes concern presentation and selected mechanical choices. No independent comparison establishes a numerical rate improvement over the historical clock. 45

The founder-to-company link is strong; the founder-to-every-detail link is not. The article should keep those levels of attribution separate, especially where a product page describes a company's work without assigning each task. 142

Why it matters

The contribution is the establishment of an independent setting for ongoing mechanical clock work. It deserves a provisional place in Rigotto's selection because the founding role is directly documented, while the underlying historical ideas remain credited to their predecessors. 14

Research limit: Editorial assessment; impact and ranking require wider independent research.

What to look for

In Libra's official illustrations, the glass-plate construction and left-side pendulum are the features identified by the maker. They are not evidence that the modern clock is the original Strutt/Wigston object or that every part was designed by one person. 54

Research limit: Published-description observation; exact variant and original-object comparison need further examination.