'Other' Constructional and Allied Systems Info & Downloads
Eureka! (2) Construction Sets
Eureka! (2) was a Meccano-like construction systems with 15.7mm hole spacing. It was made in Spain. Dates currently unknown.
Brief details - Distance between holes 15.70 mm., diameter of holes 3.91 mm., diameter of shafts 3.61 mm., screw M3.5. It has no motor. Number of different parts 79.
Info from the Metal Constructional Systems Database for EUREKA! 
Hole pitch >12.7mm
Sets 1-3 from Celsa (Valencia). Box label has boy, small boy, small girl around Crane on floor. Parts all nickel, or red, blue, green, black, yellow. They are M-principle but many of a different character.
Below there are manuals/leaflets which can be downloaded by clicking on the appropriate image.
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