Published by Werner Söderström Osakeyhtiö (NA)
This finish book is of course not much use for English audience but is included here for centimental reasons. This book provided hours and days and weeks of dreaming for me when I was under ten. There are at least 13 editions so I think that it is safe to conclude that I was not the only one! Covers the construction and to some extent design of a row-car, kite, airplane model, steam turbine, sterling engine, Windhurst influence machine, spark inductor, x-ray experiments, hi-voltage experiments, photography, cime projecter, printing press and radio amateur equipment. A great book!