I might not be right, but I think because of the softness of the lead/graphite. I might be wrong! (Sorry!!!!)
The number of the pencil is based on the type of carbon lead used inside. The thicker the carbon lead gets the higher the number of the pencil becomes. If you notice a mechanical pencil is 0.9mm in diameter so it would be called a #0.9 pencil. A #2 pencil's lead is 2mm in diameter. So Why would we call a pencil a #3 pencil? Because it's lead is 3mm in diameter.
The number two in reference to a pencil denotes the relative hardness of the graphite or "lead" that is in the pencil, HB being softer and three being harder, etc.
The # is reference to the hardness of lead A number 2 pencil is averagely hard aka HB
Brookman
Use a Pencil, a string, and 2 nails (or tacks). Mount the 2 nails(or tacks) on a drawing surface. Tie a string into a loop such that it will go around the 2 nails with plenty of extra slack. Lay the string so it encircles the 2 nails. Using your pencil, place it inside the string and pull it one direction so the string loop forms a triangle between 1 nail, the other nail and the pencil point. Now move the string around the nails while keeping the string pulled tight. The pencil will trace an Ellipitcal oval shape.
The 2 is the number of the lead in the pencil.
it doesnt have real lead so it is safer, so it is the second one made. ( its grafite)
Yes it is. So is the 0.7.
I think every 2 days or so. It really varies on the pencil.
.There are so many units of length.2 mm is the lead of a no 1 pencil .
A pencil is 0.25 inches or as thick as a 2 gauge wire.
I don't know... why would you ask me?My AnswerThe # 2 pencil was identified in the early 1970's as the pencil that computerized marking systems could best recognize. This was fortunate as they are cheap and popular any way
Usually on most pencils it says it on the case or on the side of the pencil by the eraser it says PENCIL #2 or #2.Hope i helped!:)
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The number of the pencil is based on the type of carbon lead used inside. The thicker the carbon lead gets the higher the number of the pencil becomes. If you notice a mechanical pencil is 0.9mm in diameter so it would be called a #0.9 pencil. A #2 pencil's lead is 2mm in diameter. So Why would we call a pencil a #3 pencil? Because it's lead is 3mm in diameter.
I don't quite understand what you mean by HB-2 pencil but if you mean HB pencil / #2 Pencil it is not the softest pencil. Pencils scale from 9H to 9B, (HB in the middle) and 9B would the softest and darkest pencil there.
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