BSI BS 3060:1958

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Specification for school chalks

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BSI BS 3060:1958

Specification for school chalks

PUBLISH DATE 1958
BSI BS 3060:1958

WITHDRAWN

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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