Used to evaluate unsanded plaster. Features an aluminum cone, 1.625 x 3.625 inch (41.3 x 92.08mm) and blunted to a hemisphere a distance of .125 inch (3.2mm) for an overall length of 3.5 inch (88.9mm) and plunger assembly with adjustable indicator. Total plunger weight is 200g. Includes frame with bakelite platform, aluminum cone plunger assembly with adjustable indicator and 400ml brass measure cup as specified for ASTM C185.