Old<unk> s Modern<unk> s<unk> s are small<unk> s provided for free in<unk>  stores worldwide. They are found in small boxes attached to poles, together with maps, measuring tapes and shopping forms. The<unk>  has been known for the wide variety of designs. Through the years the color changed from blue, to yellow to the natural color of wood. Despite the different colors, its dimensions have always been 7×87mm. It is said that the<unk>  was introduced to rival the Argos pen, which was also given for free at Argos stores in the United Kingdom. During this time, the competitor only provided six pens for each catalogue stand while<unk>  offered them in large dispensers.<unk>  orders 5.2 million<unk> s yearly for its Canadian stores alone, and the company does not disapprove of customers that put them to other uses such as craft projects or works of art. The Dutch artist Judith Delleman constructed a chair out of hundreds of them. When an<unk>  store first opened in South Korea, two years' worth of free<unk> s were consumed in the span of two months. Being disposable, the<unk> s are also used by surgeons to mark osteotomy cuts in craniofacial and maxillofacial surgery. Another application of<unk> s is to draw electronic circuits, and<unk> s have been used in the fabrication of free chlorine sensors for drinking water.
IKEA pencil
Valmy SAS
UFAW Handbook
Challacombe scale
Jaeger chart
Pest House
Amsler grid
Eye chart