Wim Sparla -- an architect, living and working in Tilburg, the Netherlands. His designs are all based on the "plastic number". The use of the plastic number for measures and sections, this guarantees order and harmony in each design. In the year 1998, Wim Sparla started with his "Vierling"-series. All based on the same "plastic number" concept. Nowadays, there are over 200 different "Vierlingen" to choose from. All "Vierlingen" are hand made and in limited series of 5 maximum.
"Vierlingen" -- The repeat of the image emphasizes the going together, enlivens the direction and intensifies the rythym.

"By embedding the original image in a mutual solitary way and gradually enlarging the images, the continuous search for order and harmony is confirmed. This with a wink to the old roman master of building Vitruvius, in whose book about architecture, The Ordinance, that is to say the harmoniously going together of measures and sections, is such an important basic condition", Wim Sparla, "Father Dom. H van der Laan has brought to expression the foundations of the architectonic ordinance in his doctrine about the 'plastisch getal'."