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Hoha Construction Sets

Hoha was a simple Meccano-like construction system. It was produced in Germany from the 1930s to the 1950s.

Manufacturer / Distributor

E. Horn amp; Sohn, Ludensheld, Germany

Info from the Metal Constructional Systems Database for HOHA

System Type
Hole pitch >12.7mm
1935 to 1950
Boss Type
Boss Thread
Diametrical Pitch of Gears
No. of Parts in System
Hole Pitch (Spacing) (mm)
13.1 (see comment *1)
Diameter of holes in Strips(mm)
4.2 (see comment *2)
Diameter of the Bore in Bosses(mm)
Diameter of Axle Rods(mm)
4.0 (see comment *3)
Types of Nuts and Bolts
Nuts: hexagonal
Bolts: round (slotted)
Material/Finish of Nuts and Bolts
Steel with a Nickel plated finish
Size of the Nuts across Flats (mm)
7.0(see comment *4)
Bolt diameter (mm)

Rather flimsy bright nickel parts, with formed Bonnets, Loco parts, etc. 2 versions in 11/291. *1*2 As found; 13.1/4.1 & 13.0/4.6 reported. *3 Needs confirming, 3.5 also reported. *4 7.5 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 manuals/leafets and photos which can be downloaded by clicking on the appropriate image.

A Hoha manual for sets 1-4
(Added 14/11/2018)

A Hoha brochure
(Added 14/11/2018)

A leaflet for Hoha
(Added 14/11/2018)

A leaflet for Hoha
(Added 14/11/2018)

A leaflet for Hoha
(Added 14/11/2018)

A parts list for Hoha sets
(Added 14/11/2018)

The German patent for Hoha
(Added 14/11/2018)

Various photos of the Hoha construction system
(Added 14/11/2018)