Standard Penetrometer

Used to determine grade of bitumen. The penetration tests determine consistency of bitumen for the purpose of grading Depth in units 1/10 of millimeter to which a stand ard needle having a standard weight will pe netrate vertically in a duration of five secon ds at a temperature of 25 ยบC determines pen etration for gradation.
Accessories : 
Penetrometer Cone : made of Gunmetal and is fitted with a hardened and ground detachable steel, tip and a stem, Total moving weight is 150 0.1 gram.
Automatic Standard Penetrometer :
Same as above RSEP-180, but supplied with transistorized timer and electro-magnet incorporated in the cluth mechanism to accurately control penetration time to exact five seconds.