grafitové ceruzky špeciálne

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
Leads Hardness
(1)
(4)
(1)
Producer
(2)
(3)
(19)
(6)
(1)
(4)
(2)
(39)
(1)
(4)
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Code:0294

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0,7 € with VAT
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Code:TTS404648

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Code:62100024

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Code:0292

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Code:02324

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Code:02325

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1,25 € with VAT
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Code:322/03-HB

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1,7 € with VAT
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Code:0201

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0,34 € with VAT
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Code:332520

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1,6 € with VAT
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STABILO EASYgraph S graphite pencil for right-handed people - light blue
Code:326/02-HB

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1,25 € with VAT
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Code:70446

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2,09 € with VAT
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Code:5028

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Code:B-59063-10

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Colored pencil KOH-I-NOOR Double-sided, red-blue, 1 pc
Code:0214

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0,54 € with VAT
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KOH-I-NOOR graphite pencil in varnish 4B, black 1 pc
Code:029107

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1,46 € with VAT
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KOH-I-NOOR pastel pencil For smooth surfaces, red 1 pc
Code:62100021

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0,71 € with VAT
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Code:703117

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3,24 € with VAT
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Code:511910

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1,94 € with VAT
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Code:322/01-HB

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Code:16000

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2,03 € with VAT
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Code:5027

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0,24 € with VAT
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Code:F49498

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56,06 € with VAT
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STABILO EASYgraph graphite pencil for left-handed people - light blue
Code:321/02-HB

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Code:322/04-HB

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1,7 € with VAT
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Code:TST8054

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1,6 € with VAT
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Faber-Castell Grip Jumbo pencil, red
Code:029143

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1,9 € with VAT
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