Staedtler 120-2BK3DA pencil Noris HB2, 3 ST, blister card

Product Information

Ideal for school and office use, the Staedtler Noris HB Pencil includes a convenient eraser tip for any corrections. As the pencil core becomes softer (through the use of lower proportions of clay) it leaves a darker mark as it deposits more graphite material on the paper.

When the supply of natural graphite from Borrowdale ran short, the graphite was thinned down with other materials. ExaminersarepeoplejustlikeyouandIandrecognisetheimportanceofexamsindeterminingyourfuture,theywillnotjustthrowallsensetothewindandnotmarkyourpapersbecauseyouhaveusedthewrongpenciltype. Thanks to WOPEX technology, these products can be produced in a more environmentally friendly and resource-conserving way.The jumbo triangular shape with ergonomic soft surface is particularly suitable for small children’s hands.

The hardness of the graphite core is often marked on the pencil — look for a number (such as “2” “2-1/2” or “3”) — and the higher the number, the harder the writing core and the lighter the mark left on the paper.Rather than bonding pieces of wood together in several stages, as in the case of traditional graphite and coloured pencils, pencils made from WOPEX are produced in a mould.

The wood-cased pencil was invented following the discovery of a large graphite deposit in Borrowdale, England in 1564.Thanks to its non-slip grip, the Mars ergosoft jumbo pencil is ideal for children’s first writing exercises in primary school. In 1794, Nicholas-Jaques Conté and Joseph Hardtmuth independently discovered almost at the same time that by mixing graphite with clay it was possible to produce leads with different degrees of hardness, which would preserve the graphite deposits and also accommodate a variety of applications. In reality however, there is no specific industry standard for the darkness of the mark to be left within the HB or any other hardness grade scale.