A mechanical pin, also pressure pencil, uses a re-usable made of plastic or metal instead of the wear outable wood coat for the write mine. Contrary to pencils and coloured pencils with wood coat, the management remains constant with arbitrary mine length. The moreover one a costing and an environmental advantage, since only the mine must be replaced, exist to be reused the plastic coating however can.

Fine-lead pencil

The probably most common form of a mechanical pin is the fine-lead pencil. Mines with a strength from 0.2 mm to 1 mm are held by clamping pliers in a guidance. By easy opening of the clamping pliers by means of the pushbutton on the pin head the mine some millimeters is put forward. In a container in the pin further mines can be kept. The guidance can be rigid or fitted with springs stored, depending upon employment within the technical or artistic range. The wide-spread mine diameter of 0.5 mm is pleasant concerning line strength very, however it often breaks off by to high pressure of the operator or when falling down the pin on the soil. A good compromise between line strength and firmness is the value of 0.9 mm. The usual length of the mines amounts to 60 mm.

Drop mine pin

The drop mine pin resembles the fine-lead pencil, uses however normal pencil mines. These must be sharpened with a special Anspitzer, which by thereby the developing graphite-deaf for fingers and respiration unpleasant is. The name drop mine pin explains also its function mode: If one presses the button above, down those opens clammy ones, and the mine falls out. The mines are 2 mm thickly and clearly more stably than the thinner mines of pressure pencils. A typical drop mine pin contains one mine from space reasons only exactly. The drop mine pin was common, however then by the pressure pencils was displaced in and the 80's 70's far.

Further variants

• The Drehbleistift reaches the feed motion of the mine by a turning mechanism of the pin, instead of with the help of the pushbutton.
• There are multi-function devices, above all combinations of fine-lead pencil and ball-point pen.
• A quite practical option is the integrated eraser at the upper end of the pressure pencils or drop mine pins.

Articles in category "Mechanical pin"

We found here 3 articles.

Related Websites

We found here 3 related websites.

• Attacks Against The Mechanical Pin Tumbler Lock
  Attacks Against The Mechanical Pin Tumbler Lock. Craig Kagawa. GIAC Security Essentials Certification (GSEC). Practical Assignment Version 1.4b, Option 1 ...


• Attacks Against The Mechanical Pin Tumbler Lock
  Attacks Against The Mechanical Pin Tumbler Lock. Craig Kagawa. GIAC Security Essentials Certification (GSEC). Practical Assignment Version 1.4b, Option 1 ...


• Attacks Against The Mechanical Pin Tumbler Lock
  Attacks Against The Mechanical Pin Tumbler Lock. Craig Kagawa. GIAC Security Essentials Certification (GSEC). Practical Assignment Version 1.4b, Option 1 ...