Hallo Work is inspired by Jean Prouvés Potence light. The main idea was to add the possibility of changing the height of the head and to have a concentrated spot light instead of an overall lighting. Yet we wanted to create something that is as minimal and light as the predecessor.Luckily we found a very simple solution for the height changing mechanism. It consists of a wire that is attached to the head and the wall piece which leads through a leather strap. The height can then be changed by moving the strap along the arm.
http://45kilo.com/entry/hallo-work/