IS-2720 (Part VII) It consist of a compaction Mould 100 mm DIA. X 127.3 mm height X 1000 cc volume complete with collar and base plate all steel construction.

Rammer 2.6 kg X 310 mm controlled fall through a guide tube. Rammer 4.89 kg X 450 mm controlled fall for heavy compaction test as per IS-2720 Part VIII.