Arco reaches above a table without a ceiling suspension; Tolomeo Table redirects light through articulated arms. Each begins from a different spatial need.
Two different lighting problems
Achille and Pier Giacomo Castiglioni designed Arco in 1962 to bring overhead light above a table without fixing a suspension to the ceiling. Artemide’s Tolomeo followed in 1987, designed by Michele De Lucchi and Giancarlo Fassina. It is a table lamp whose articulated structure lets the head move in relation to a work surface. The contrast is spatial: Arco projects light from a floor-standing base toward a table; Tolomeo starts at the work surface and makes adjustment part of the lamp itself.1,2,3,4,5
Arco: an arch held by a counterweight
Flos and MoMA connect Arco’s form to the idea of street lighting brought indoors. Its long telescopic steel stem rises from a Carrara-marble counterweight; an adjustable, perforated aluminum reflector sits at the end of the arch. The base’s central opening accommodates a pole used to move the lamp. These elements work as one structural answer: an overhead reach without a ceiling fixing. The marble is not only a finish in this design account; it supplies the counterweight for the extended form.1,2,3
Tolomeo: light that can be repositioned
Tolomeo Table begins elsewhere. Tolomeo has an aluminum structure, a stamped-aluminum reflector and articulated arms with a spring mechanism for adjusting height and tilt. The head can be repositioned around a desk or another work surface rather than extending light from a floor-standing arch. Movement is built into the lamp’s joints, instead of depending on a suspension point in the room.4
One name, several design chapters
Neither name refers to only one later configuration. The original Arco, Arco K and the LED version made for Arco’s fiftieth anniversary are distinct versions of the lamp. Mini, Micro and Midi are separate Tolomeo models; Tolomeo Table has standard, LED, Tunable White, Pure Integralis and presence-detector configurations. Tolomeo launched in 1987; the “Serie di lampade Tolomeo” won the 1989 Compasso d’Oro. The manufacturer also describes its renewed LED collection as easy to maintain and disassemble, a statement about that range rather than every Tolomeo lamp.3,4,5,6,7
Start with where the light needs to go
For a room, the distinction is practical: Arco places light over a table from a floor base, while Tolomeo Table keeps an adjustable point of light close to the work surface. The first solves the reach with an arch and counterweight; the second changes height and angle through its articulated arms. Both direct light, but their structures answer different placement needs.2,3,4
An arch across the room; joints above the desk
Picture a dining table where a ceiling suspension is unwelcome: Arco places its marble counterweight on the floor and carries the reflector outward on a telescopic steel stem. The base stays apart from the lighted surface; the arch creates reach. Tolomeo Table begins at the work surface. Its aluminum arms and spring mechanism change the height and tilt of the adjustable head, so the light follows a task rather than spanning the room from a floor base. The design question is where support, reach and adjustment belong in the space. A brightness comparison would require data for the exact variants and light sources.1,4
| Spatial question | Flos Arco, specified floor version | Artemide Tolomeo Table family |
|---|---|---|
| Where is support? | Carrara-marble counterweight on the floor. | On the table or other selected mount for the exact version. |
| How does the head move? | Reflector swivels and adjusts in height on the arched telescopic stem. | Head and articulated arms adjust height and tilt with a spring mechanism. |
| What to check before placement? | Exact version’s footprint, height, reach and safe route for the cord. | Exact body/mount and clearance around the work surface. |
| What cannot be inferred? | Illuminance or suitability for a room from form alone. | Illuminance or suitability for a task from the family name alone. |
Keep the product code beside the silhouette
A photograph of an arch or a jointed arm tells you the principle, not every dimension or lamping option sold under its design name. The dimensioned Arco model from Flos is a floor lamp; Artemide’s Tolomeo Table comes in multiple product codes and light configurations. Use a matched pair of exact codes before drawing them to scale or comparing lighting data. A room diagram can show the two support strategies honestly; it should not invent lux values or claim that every Tolomeo mount is identical.1,4
