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Riag Construction Sets

Riag is a simple Meccano-like construction system. It was made in Germany in the late 1940s

Manufacturer / Distributor

Riedel Apparatebau GmbH., Berlin Steglitz, Germany

Info from the Metal Constructional Systems Database for RIAG (Ref:RIG)

System Type
as TRIX (inc MCX)
late 1940s (see comment *1)
Aluminium (Alloy)
Boss Type
no boss
Boss Thread
Diametrical Pitch of Gears
13 (see comment *2)
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)
(Screwed Rods or Bolts are used as axles.)
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: cheese (slotted)
Material/Finish of Nuts and Bolts
Steel with a Steel finish
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

Many parts have 2 rows of staggered holes like ZICK-ZACK [1], but Plates have 2-row pattern along edges with 3-row along centre. Also 7 holes diameter Plate. *1 Could also be pre-WW2. *2 Mod.2.

Pages from the 'Other Systems Newsletter' which contain information on this system are shown below. They can also be downloaded to your computer if desired here

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Below there are manuals/leaflets and photos which can be downloaded by clicking on the appropriate image.

A Riag manual
(Added 09/12/2018)

Various photos of the Riag construction system
(Added 09/12/2018)