Yantras
A Yantra is the yogic equivalent of the Buddhist Mandala. It literally means a 'machine' or a visual instrument that serves in meditation.
Yantra - Wikipedia
VRINDAVANBAZAAR.COM Shri Mahalaxmi Yantram/Shree Mahalaxmi Yantra : : Home & Kitchen
The significance of Yantras and instructions for installing them, by Nitinastroindusoot
Sri Yantra Symbol, Shri Yantra Mother All Yantras Metal Print for Sale by WallArt01
Yantras - The Amma Shop
Yantras, Yantras Benefits
Yantras - The Amma Shop
Yantra For U - Yantras are used for the worship of deities
Yantra Symbols - Yantra Meanings - Yantra Vectors