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Alcon Construction Sets

Alcon was an interesting construction toy using tubes with special connectors. It was produced in the UK from about 1949-1952.

Manufacturer / Distributor

Alcon Construction Kits, 4 High Road, Ilford, Essex, UK

Info from the Metal Constructional Systems Database for ALCON

System Type
Mainly Rods/Tubes
United Kingdom
1949 to after 1952
Wood / Aluminium (Alloy)
Boss Type
no boss
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
Types of Nuts and Bolts
Nuts: --
Bolts: --
Material/Finish of Nuts and Bolts
--  --
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

Coloured match splints (to be cut to length) push into flimsy formed sheet aluminium Unions to make frameworks. Name not used in original ads by Balfour Supplies Ltd.

Below there are various manuals/leafets which can be downloaded by clicking on the appropriate image.

The Alcon Book of models
(Added 18/10/2018)