Arma Construction Sets

Arma was a very simple constructional system using 4mm rods connected by clamps. It was made in the Czechoslovakia, in at least the early 1960s.

Manufacturer / Distributor

IGRA, folk association for the production of toys, Prague, Czechoslovkia
(IGRA, lidové družstvo pro vyrobu hracek, Praha)

Info from the Metal Constructional Systems Database for ARMA

Maker
 

System Type
Mainly Rods/Tubes

Country
Czechoslovkia / Czech Republic

Dates
known in 1955 to known in 1961

Material
Steel

Thread
M4

Boss Type
no boss

Boss Thread
----

Diametrical Pitch of Gears
--

No. of Parts in System
12

Hole Pitch (Spacing) (mm)
---

Diameter of holes in Strips(mm)
---

Diameter of the Bore in Bosses(mm)
 

Diameter of Axle Rods(mm)
4.0

Types of Nuts and Bolts
Nuts: --
Bolts: pan (slotted)

Material/Finish of Nuts and Bolts
Steel

Size of the Nuts across Flats (mm)
---

Bolt diameter (mm)
 

Comments
Details from set with IGRA logo & TYP 1 on lid. 5 galvanised Rods, 20-380mm, joined with J Clips. Other parts: Loose & Fast Pulleys, Hook (aluminium, if original), rubber Axle Stop, wood handled Scr'driver.

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

Photos of an Arma set and literature
(Added 29/09/2020)

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