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Der Kleine Konstrukteur(4) Construction Sets

Der Kleine Konstrukteur(4) was a simple Meccano-like Construction system with some special parts. It was produced in Germany in the 1920s.

Manufacturer / Distributor

An unknown company from Germany

Info from the Metal Constructional Systems Database for DER KLEINE KONSTRUKTEUR [4] (Ref:DKK4)

System Type
Hole pitch <12.7mm
  (see comment *1)
Steel / Aluminium (Alloy) (see comment *2)
M3,M4 (see comment *3)
Boss Type
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
Diameter of holes in Strips(mm)
4.0 (see comment *4)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: cheese (slotted)
(see comment *5)
Material/Finish of Nuts and Bolts
Steel with a Steel finish
(see comment *6)
Size of the Nuts across Flats (mm)
Bolt diameter (mm)

One unnumbered set seen with boy & Big Wheel on yellowish lid. One or two special/unusual parts eg Fairground Seat. *1Possible pre-WW2, even '20s. *2Few aluminium. *3M4 only on Rod ends. *4A few 4.1. *5M4: Square Nuts only. *6M4: plain brass.

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/leafets and photos which can be downloaded by clicking on the appropriate image.

Some Der Kleine Konstrukteur(4) model sheets
(added 14/11/2018)

Various photos of the Der Kleine Konstrukteur(4) construction system
(added 14/11/2018)