colored pencils

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
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CRT crayon KARMINA naple yellow
Code:271 05

CRT crayon KARMINA naple yellow

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1,51 € with VAT
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CRT crayon KARMINA tan light
Code:271 31

CRT crayon KARMINA tan light

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CRT crayon KARMINA light blue
Code:271 58

CRT crayon KARMINA light blue

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CRT crayon KARMINA ultramarine
Code:271 55

CRT crayon KARMINA ultramarine

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CRT crayon KARMINA cyclamen
Code:271 34

CRT crayon KARMINA cyclamen

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CRT crayon KARMINA moss green dark
Code:271 82

CRT crayon KARMINA moss green dark

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CRT crayon KARMINA emerald
Code:271 77

CRT crayon KARMINA emerald

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1,51 € with VAT
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CRT crayon KARMINA light ocher
Code:272 02

CRT crayon KARMINA light ocher

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1,51 € with VAT
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CRT crayon KARMINA umber
Code:272 21

CRT crayon KARMINA umber

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1,51 € with VAT
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CRT crayon KARMINA cadmium lemon
Code:271 07

CRT crayon KARMINA cadmium lemon

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1,51 € with VAT
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CRT crayon KARMINA light gray
Code:272 32

CRT crayon KARMINA light gray

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1,51 € with VAT
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CRT crayon KARMINA prussian blue
Code:271 61

CRT crayon KARMINA prussian blue

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1,51 € with VAT
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CRT crayon KARMINA ivory black
Code:272 50

CRT crayon KARMINA ivory black

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1,51 € with VAT
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CRT crayon KARMINA madder carmine
Code:271 17

CRT crayon KARMINA madder carmine

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1,51 € with VAT
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CRT crayon KARMINA grass green
Code:271 84

CRT crayon KARMINA grass green

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CRT crayon KARMINA permanent red light
Code:271 13

CRT crayon KARMINA permanent red light

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1,51 € with VAT
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CRT crayon KARMINA magenta
Code:271 28

CRT crayon KARMINA magenta

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1,51 € with VAT
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CRT crayon KARMINA chestnut brown
Code:272 15

CRT crayon KARMINA chestnut brown

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1,51 € with VAT
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CRT crayon KARMINA dark grey
Code:272 35

CRT crayon KARMINA dark grey

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1,51 € with VAT
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CRT crayon KARMINA permanent red dark
Code:271 15

CRT crayon KARMINA permanent red dark

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1,51 € with VAT
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CRT crayon KARMINA moss green light
Code:271 81

CRT crayon KARMINA moss green light

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1,51 € with VAT
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CRT crayon KARMINA permanent white
Code:271 01

CRT crayon KARMINA permanent white

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1,51 € with VAT
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CRT crayon KARMINA violet
Code:271 38

CRT crayon KARMINA violet

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1,51 € with VAT
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CRT crayon KARMINA orange
Code:271 11

CRT crayon KARMINA orange

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1,51 € with VAT
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