MOTHER TOOL tempo mobiles are designed by architects and designers. Using weight and balance, every mobile approaches the concept of space and time to create a sense of wonder. Craftsman who specialises assembly carefully put together the pieces one by one in a workshop in Tochigi Prefecture, Japan. Perfect Instance is composed of two anodized aluminum plates. One horizontal and the other vertical split on the sides, so that the plates intersect. A metal bar separates the two plates so that they are at a good distance and do not touch each other. There are also two weights at the ends of each plate to hold them in place. This allows the two plates to turn freely on themselves with the wind.