'Other' Constructional and Allied Systems Info & Downloads

Metallo-Trigon Construction Sets

Metallo-Trigon was an unusual construction system. It used triangular shaped parts to make models. It was made in Germany from around 1913 to 1926.

Info from the Metal Constructional Systems Database for METALLO TRIGON

System Type
Non-Meccano type
1913 to circa 1926
Boss Type
Boss Thread
M2 (see comment *1)
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
12.5 (see comment *2)
Diameter of holes in Strips(mm)
3.2 (see comment *3)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: hexagonal (slotted)
(see comment *4)
Material/Finish of Nuts and Bolts
Steel with a Steel finish
(see comment *5)
Size of the Nuts across Flats (mm)
6.0(see comment *6)
Bolt diameter (mm)
6.0(see comment *7)

Clamping NBW join Triangles edge-to-edge with Double Angle Strip crossways. *1 & 2.4x.65. *2 some parts 12.0, 8/8.5 for Double Angle Strip outer holes. *3 Typical but up to 3.4, & 2.9 also. *4*5*6*7 & hex nut & round slotted bolt brass plated steel 6.3 6.0. Nickel plated steel also possible.

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

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The report can be zoomed into, made full screen or downloaded as a pdf document by using the controls provided

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

The Metallo-Trigon manual for set 0
(Scans from Urs Flammer)

The Metallo-Trigon manual for sets 1 to 3
(Scans from Jean-Pierre)

The German patent for Metallo-Trigon
(Scans from Urs Flammer)

The Swiss patent for Metallo-Trigon
(Scans from Urs Flammer)

Various photos of the Metallo-Trigon construction system
(Scans from Urs Flammer)