Significance of Wheel of Dharma / Dharma Chakra
As the Indian tradition goes each Deity/God has a vehicle / Vaahana; Swan, Peacock, Lion, Bull…etc. For the Mahatma, who sacrificed his life for upholding of Truth, Dharma and Ahimsa what else can be the Vaahana but for The Wheel of Dharma. So Dharma Chakra with 24 spokes has been chosen as his vaahana.
It has been installed in front of Main Deity, but outside Garbha Griha in the Mandap. Devotees treat it auspicious to have a glance of Gandhi Deva from the centre axel of this Dharma Chakra.