bell can be eight, twelve, sixteen, eighteen or twenty-two
finger-widths in height. Its base must be round, above
which is a vase surmounted by the face of the goddess
Prajnaparamita. Above these are a lotus, a moon disc
and finally a vajra.
hollow of the bell symbolizes the wisdom cognizing emptiness.
The clapper represents the sound of emptiness. The eight
lotus petals are the four mothers and four goddesses
and the vase represents the vase containing the nectar
with the vajra the bell represents wisdom, and as wisdom
and method are an undivided unity so the vajra and bell
are never parted or employed separately.