For the determination of the volume consistency of cement in accordance with DIN EN 196-3.
The ring consists of a fexible sheet body, made of copper-zinc alloy, with two measuring needles.
The slightly oiled ring is placed onto a glass plate, manually filled with standard compliant cement paste and covered with a second glass plate on which a weight of approx. 50 grams is placed. Then the ring is exposed to a standard climate. After the setting of the cement paste the spread of the ring is measured at the end of the measuring needles.