YAMA GANDHA/ YAMA-KANTAKA
Name of an Upagraha reffered as son of jupiter and producing auspicious results.
Planetary combinations giving special result and affecting the life of an individual Yoga also reffers to a particular division of time, which are 27 in number.
The Yogini Dasa at birth on calcualtions on the the number of birth-nakshatra.
The term "Yantra" is derived from Sankrit. "Yan", means to conceive, to imagine. The suffix "Tra", means instrument.