Question

The fine lead used in mechanical pencils has a diameter of about?
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Answer 1

Answer:

The diameter of the lead in a standard woodcase pencil, 2.0mm is the beginning of ‘wide’ rather than ‘thin’ lead in many definitions. The standard for many drafting clutch leadholders made around the world, and carried in ‘big box’ stores, it is possibly the most available lead width apart from 0.5mm and 0.7mm. 2.5mm