BS 3060:1958
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for school chalks
Hardcopy , PDF
30-06-1991
English
31-12-1958
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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