KOHCTPYKTOP.
A 1930 Soviet-era construction toy manual with an unknown author and publisher, aimed at children learning to build models from perforated metal strips, wheels, and axles. The pictures show finished models built from perforated strip plates: a wheeled chassis with axles, a tall lattice frame or stand, a balance scale hung on cords, and a windmill-like rotor with a drum. A designer could take the bold, regular hole patterns and the hand-drawn line style of these mechanical toy diagrams.
