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Geobra Construction System

Geobra was a simple construction system which used braced panels to make tower cranes etc. It was made in Germany in the mid 1950s


Manufacturer / Distributor

Georg Brandstätter, Zirndorf bei Nürnberg, Germany


Info from the Metal Constructional Systems Database for GEOBRA

Maker
 
System Type
Non-Meccano type
Country
Germany
Dates
known in 1954
Material
Steel
Thread
M3
Boss Type
no boss
Boss Thread
----
Diametrical Pitch of Gears
19 (approximately)
No. of Parts in System
32 (see comment *1)
Hole Pitch (Spacing) (mm)
Variable
Diameter of holes in Strips(mm)
3.2
Diameter of the Bore in Bosses(mm)
3
Diameter of Axle Rods(mm)
2.9
Types of Nuts and Bolts
Nuts: --
Bolts: cheese (crosshead)
Material/Finish of Nuts and Bolts
 
Size of the Nuts across Flats (mm)
---
Bolt diameter (mm)
 

Comments
Braced Panels joined by Bolts into formed threads. 2 sets known, similar but different size parts. *1 22 also reported, perhaps from one of the sets?

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


A Geobra instruction booklet
(Added 29/03/2021)

Photos of a Geobra set
(Added 29/03/2021)