Chandra Yantra is used to derive positive benefits of Moon when it is placed in a malefic position in the horoscopic chart. The worship of this yantra brings respect, friendship and a harmony in relationships to the worshiper. Chandra Yantra is placed in the house or worn on any Monday of Shukla Paksha and is usually kept along with the image of Shiva.

Beej Mantra for this Yantra  :-   "Aakarshay Mahadevi Ram mam Priyam Hey tripure 
                                                  Devdeveshi Tubhyam Dasyami Yanchitam"

Size of Yantra : 3 x 3 inches

Pran Pratishta (Energization) and Puja of Yantra :

Since a Yantra is a Man-Made object, it requires energization to infuse potency and power to benefit the owner. Before sending the Yantras, we get Pran Pratishtha done by learned Purohits (Priests) without any extra charges. This is done by reciting Mantras as prescribed by Vedas, as well as Homa for the respective Devi / Devta as per Yantra.

When you receive the Yantra, you need to also worship the Yantra as follows:

1. Purify your body and start with a clear and positive frame of mind.
2. Find a place on the floor facing east, where you will be undisturbed. 
3. Light Incense / Diya 
4. Lay  fresh flowers and a fresh fruit on the altar. 
5. Open the Yantra and place it along with the image of the deity of yantra and your ISHT God. 
6. Take some water and sprinkle it on yourself and then on the Yantra using the leaf of a tree.
7. Close your eyes and fix the image of the diety in your mind. Now with all sincerity, ask God to grant you the desire of your life that you wanted to be fulfilled in  your own language.

Now chant the specific  BEEJ MANTRA  of the YANTRA  at least 9 times

Please Note : The Design of the yantra may differ slightly from the image shown above, as we keep on upgrading our yantras under the guidance of our learned gurus to make yantras more & more effective