Mechanical pencil applied at an angle. When excess vertical pressure is applied on the lead, the lead is automatically retracted inwards. Higher-end mechanical pencils often feature a lead hardness grade indicator and sometimes feature a retractable lead guide pipe. This allows the lead guide pipe to retract back into the pencil body, which will keep it protected in storage and during transit and makes it 'pocket-safe'. In spite of the name, pencil leads do not contain the toxic chemical element lead, but are typically made with graphite and clay, or plastic polymers. Compared to standard pencils, mechanical pencils have a smaller range
Lead Pencil Studio posited by the man-made world." Han and Mihalyo met at the University of Oregon in 1991 while in the architecture program, and their relationship has evolved into a work partnership centered around Lead Pencil Studio. They have also worked in Bellingham, Chicago, Portland, and Seattle, among others. They currently reside in Seattle, Washington. Annie Han was born in Pusan, South Korea in 1967, and attained an accredited Master's equivalent in Architecture (5-year B. Arch) from the University of Oregon in 1993 before studying sculpture for one year at Portland State University in 1994. She is a naturalized US citizen. Daniel