• BS 3060:1958

BS 3060:1958

Specification for school chalks

BSI Group , 12/31/1958

Publisher: BS

File Format: PDF

$80.00$160.02


Specifies the materials, size, hardness, weight and breaking strength of moulded white and coloured chalks of circular and other cross sections, which are intended primarily for writing on chalkboards; and also gives details of packaging and marking.

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