Pencils, graphite

tvrdosť ceruziek

Značenie tvrdosti grafitových ceruziek

Európsky systém používa kombináciu písmen H (hard) tvrdý, F (firm) pevný a B (black) mäkký.
Najmäkšia tuha je 9B a najtvrdšia je 9H (čím väčšie číslo - tým väčšia mäkkosť alebo tvrdosť).

Tvrdosť tuhy určuje podiel grafitu a ílu. Čím viac je ílu primiešaného, tým je tuha tvrdšia.

V obchodoch môžete taktiež naraziť na označenie ceruziek 1, 2 a 3, ide o tri najpoužívanejšie tuhy pre školákov.
Ceruzka č. 1 odpovedá tuhe B, ceruzka č. 2 tuhe HB a č. 3 označuje tuhu H.
Jednotka a dvojka sú určené na písanie a kreslenie, trojka je tzv. rysovacou ceruzkou.

Price and labels
Lead Size
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Leads Hardness
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Producer
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CRT pencil Fine art graphite 7H
Code:160 17

CRT pencil Fine art graphite 7H

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1,14 € with VAT
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CRT pencil Fine art graphite 5H
Code:160 15

CRT pencil Fine art graphite 5H

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1,14 € with VAT
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Colored pencil, hexagonal, for any surface, STABILO "All", black
Code:TST8046

Colored pencil, hexagonal, for any surface, STABILO "All", black

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1,6 € with VAT
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Spare leads 0,7 mm 2B MILAN
Code:1851071424

Spare leads 0,7 mm 2B MILAN

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0,79 € with VAT
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Graphite pencil, 2B, hexagonal, STAEDTLER "Noris"
Code:TS1200

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Code:090522

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2,27 € with VAT
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CRT crayon MARINO Cyclamen
Code:241 34

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1,96 € with VAT
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Mechanical pencil / Versatil JUNIOR Versa 2.0 mm (4 colors)
Code:02169

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Code:134751

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Code:241 07

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Code:62100021

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Code:242 21

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CRT pencil Fine art graphite H
Code:160 11

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Code:463 42

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Code:160 07

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Code:029117

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BOX 10 STICKS OF NATURAL CHARCOAL 3-6mm
Code:617024

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Artificial angle KOH-I-NOOR 5.6 mm, black, set of 6 pcs
Code:0334

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CRT crayon MARINO Magenta
Code:241 28

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Graphite pencils KOH-I-NOOR HB / 0.9 mm, 12 pcs
Code:62417210

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CRT pencil Fine art graphite B
Code:160 01

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CRT pencil artist charcoal soft 1
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Pencil Graphite Sparkle - turquoise B
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CRT crayon MARINO Light Grey
Code:242 32

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Box 3 charcoal pencils MILAN Art
Code:07B622203

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CRT pencil Fine art graphite 4H
Code:160 14

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CRT pencil artist white chalk 2
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CRT crayon FINE ART PASTEL bremen blue
Code:471 63

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KOH-I-NOOR graphite pencil in varnish 4B, black 1 pc
Code:029107

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