CONCRETE PENETROMETER - POCKET TYPE

ASTM C403

Consists of a needle having face area 3/10 sq.cm. and graduated at a distance of 25mm. The needles point is an integral part of barrel which houses a calibrated spring. The spring is confined in a sleeve. The resistance offered by the concrete mortar is shown on the direct reading scale with a marker ring which holds its position when released. Scale range is 0-50 kg/cm2 when the penetration resistance reaches a value of 35kg/cm2, the concrete is assumed initially set. Resistance in kg/cm2 is indicated on the scale. Supplied complete in a leather carrying case.