Virtual Human Body
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About the Visual
communications and office automation
The first true writing instruments were made by the Sumerians in Mesopotamia nearly 5,000 years ago.
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Instrument invented at the beginning of the 20th century; the writing tip holds a small rotating ball.
Elastic metal part that compresses to push the refill out and relaxes to retract it.
Tip that contains the ball bearing used to deposit ink from the cartridge onto the writing surface.
Part that is activated by the push-button; it pushes out or retracts the writing tip when pressure is applied.
Curved metal bar that attaches the ballpoint pen to a pocket.
Protruding part that locks the thrust tube in a forward or retracted position.
Small reservoir containing ink and ending in a point.
Button controlling the mechanism that advances and retracts the cartridge.
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