What two kinds of grinding instruments have been found from the sites of Harappan Culture?
The following two kinds of grinding instruments have been found:
1. Those on which another smaller stone was pushed or rolled to and fro. It was probably used solely for grain.
2. And the others with which a second stone was used as a pounder, eventually making a large cavity in the nether stone. it was possibly used only for pounding herbs and spices for making curries.