'Other' Construction and Allied Systems Info & Downloads
Konstruktor Mekhanik(4) Construction Sets
Konstruktor Mekhanik(4) (Конструктор Механик) is a Meccano-like construction system with similarities to the German Eitech "Construction" system. It is currently made in Russia by the LLC Takeoff (ООО Взлет) and sold through NPC Kontur LLC (ООО «нпц «Контур»). Both of Cheboksary Russia. The company's website is http://np-kontur.ru/. and https://nptskontur.tiu.ru/. This system appears to virtually the same as Konstruktor(20), Metallicheskiy Konstruktor and Samodelkin (Самоделкин).
The actual manufacturer of these sets is quite likely to be the same as Konstruktor(20), Metallicheskiy Konstruktor and Samodelkin (Самоделкин) sets as they all use the same range of parts and the companies are all located Cheboksary.
Below there are manuals/leaflets which can be downloaded by clicking on the appropriate image.