The Portland Pudgy safety dinghy is a self-rescue boat, even without the optional inflatable exposure canopy and other survival gear. With the exposure canopy, sea anchor, and sail kit, the Portland Pudgy is an unsinkable, dynamic lifeboat.
The âlead pencil,â containing no lead, was invented in 1564, a turning point in pencil history. Although civilizations were centuries away from making mechanical pencil history, the pencil invented in the sixteenth century advanced the writing instrument. Before 1564, artists mainly used stylus-like pencils. The history of the pencil owes a dept to the discovery of a graphite mine in Cumbria, England.
History of the marker pen. Sidney Rosenthal, from Richmond Hill, New York, invented the marker in 1953. Mr. Rosenthal placed a felt tip on the end of a small, stout bottle of permanent ink and discovered that the resulting marks saturated a heavy, absorbent surface, yielding rich color and permanence. History of the pen (The boring bit....)