The apparatus consist 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 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 millimeter sub division. Supplied complete with adjustable needle holder, penetration needle sample container, transfer dish and weight of 50 gms.
With Automatic Timer :
Same as above but with automatic digital timer and electrical arrangement.