Standard Penetrometer - Vertical Pillar Design With Adjustable Height, Fine Adjustment Rack And Pinion System, Includes Bitumen Penetration Needle And Ring Weights, Easy Reading Dial Graduated In 400 1/10 Mm

Used to determine grade of bitumen. The penetration tests determine consistency of bitumen for the purpose of grading. Depth is units 1/10 of millimeter to which a standered needel having a standered weight will penetrate vertically in a duration of five seconds at a temprature of 25 degree celcious determines penetration of gradation.
Specifications : It consists of a vertical pillar mounted on a base provided with levelling screws. The head, together with dial plunger rod and cone (or needel) slides on a pillar and can be clamped at any desired height. A rack and pinion and pointer assembel provides fine adjustment of needel or cone tip to sample. It incorporates a cluch mechanisum which makes reading of penetration and subsequent resetting a simple and accurate operation. The dial is graduated in 400 1/10 and the millimeter subdivision and the needle pointer against figures makes easy reading. Supplied with a bitumen penetration needle, ring weight one each 50 gms, and two sample containers.
Accessories : Penetration cone for empirical estimation of penetration of lubricating grease, petroleum jelly etc.