The apparatus consists of a cast aluminium base with an iron stand on which moves an aluminium arm. A 6" dial is fixed on this arm and a brass chromium plated rod to slide through the lower portion of the arm. A needle with weights is fitted to this rod. The dial is graduated from 0-400 in one-tenth millimetre subdivision. Supplied complete with the adjustable needle holder, penetration needle sample container, transfer dish and weight of 50 gms.
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