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The "number 2" designation refers to the "hardness" of the lead. The higher the number, the "harder" The "7mm" designation refers to the "thickness" of the lead. The higher the number, the thicker. They are not the same pencil.
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 # is reference to the hardness of lead A number 2 pencil is averagely hard aka HB
A o.7 mechanical pencil will do the job.
Actually, what you are asking is referring to the hardness of the pencil. So both, 0.5mm and 0.7mm are the same hardness as number two pencils. The number of lead, 0.5, is a thinner lead in diameter to the 0.7.
Yes!!!
The 2 is the number of the lead in the pencil.
The "number 2" designation refers to the "hardness" of the lead. The higher the number, the "harder" The "7mm" designation refers to the "thickness" of the lead. The higher the number, the thicker. They are not the same pencil.
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.
It has to do with the kind of graphite or material used as the lead for the pencil.
The # is reference to the hardness of lead A number 2 pencil is averagely hard aka HB
A o.7 mechanical pencil will do the job.
Pencils have never been made from lead. They are made with Graphite, a form of carbon. So you can not get lead poisoning from a pencil.
number 2 describes the thickness of the lead, and darkness of the lead
lead pen because a lead pencil is a regular pencil.
Pencil lead does not have coal. Pencil lead contains graphite.
lead pencil is incorrect because it lead pencil