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Méca Labo(a) Construction Sets

Méca Labo(a) was a professional system for prototyping and development in industry. It was made in France, in the 1960s to the 1980s.

There was also a later version 'Méca Labo(b)' which had smaller hole spacing and rod size.

Manufacturer / Distributor

Compagnie des Compteurs, 12 Place des Etate-unis, Montrouge (Seine), France

Info from the Metal Constructional Systems Database for MÉCA LABO [a]

System Type
Professional type
before 1960 to 1980s
Aluminium (Alloy) / Steel
Boss Type
Boss Thread
Diametrical Pitch of Gears
51 (see comment *1)
No. of Parts in System
70 (approximately)
Hole Pitch (Spacing) (mm)
20.0 (see comment *2)
Diameter of holes in Strips(mm)
5.5 (see comment *3)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
Types of Nuts and Bolts
Material/Finish of Nuts and Bolts
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

A Base Board with Supports for gearing & for commercial components.*1 Mod 0.5. *2*3 For Base Board.

The MCS document for this system is shown below. It can also be downloaded to your computer if desired here

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There are currently no manuals, leaflets or photos etc. available for downloading. If you can supply any, please get in contact with me.