grafitové ceruzky s gumou

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
Leads Hardness
(1)
(2)
(5)
Producer
(1)
(2)
(5)
(1)
(6)
(3)
(1)
(16)
(1)
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Code:0253

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Code:2160/05 - HB

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0,55 € with VAT
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0,11 € with VAT
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Code:215021

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0,17 € with VAT
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Code:600460

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0,6 € with VAT
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Code:2160/03 - HB

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0,55 € with VAT
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Code:2160/HB

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Code:4907/HB-54

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0,38 € with VAT
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Code:490806

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0,38 € with VAT
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Code:2160/02 - HB

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0,55 € with VAT
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Pencil MILAN 4 x triangular HB/B/2B + eraser
Code:BYM10344

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1,57 € with VAT
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Code:490801

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0,38 € with VAT
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0,17 € with VAT
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MILAN HB graphite pencil with Sunset eraser
Code:071622724

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0,52 € with VAT
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HB STABILO pencil 160 graphite pencil with eraser - pink
Code:2160/01 - HB

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0,55 € with VAT
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Code:0712370312

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0,23 € with VAT
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Pencil STABILO Swano Fluo green
Code:4907/HB-33

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0,38 € with VAT
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Code:490804

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0,38 € with VAT
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HB graphite pencil with Ruler eraser, mix/4 colors
Code:6814

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