'Other' Construction and Allied Systems Info & Downloads
Konstruktor(2) was an aluminium construction system with similarities to Meccano. It was made in Russia by the Sverdlovsk Production Association "Machine-Building Plant named after M. I. Kalinin" (Свердловское производственное объединение "Машиностроительный завод им. М. И. Калинина") from at least 1971 to at least the late 1980s. There was also another manufacturer which produced clones of at least some of these sets - Repair Plant "Hydroapparat", Feodosia (Ремонтный завод "Гидроаппарат" г. Феодосия)
Info from the Metal Constructional Systems Database for KONSTRUKTOR 
Hole pitch >12.7mm
Bolts: round (slotted)
Small (like Meccano No.37c)
Parts include 3-15h Strips, 9,17,21 holes Angle Girders, 6 holes Bush Wheel & Wheel Disc, Semi-perforated Plates, rubber (probably) Track.
The MCS document for this system is shown below. It can also be downloaded to your computer if desired here
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Below there are manuals/leafets which can be downloaded by clicking on the appropriate image.
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