Changes

=== Yantras in a Fort ===

=== Yantras in a Fort ===

There were a variety of weapons housed inside the fort to attack enemy and defend the fort. There are basically two types of such instruments. One is sthira and the other cala. Dr. Raghavan in his Mechanical Contrivances presents a clear picture of the various [[Yantra Shastra (यन्त्रशास्त्रम्)|yantras]] or weapons used in forts.<ref name=":1">Raghavan, V. (1952) ''Yantras or Mechanical Contrivances in  Ancient India''. Bangalore: The Indian Institute of Culture</ref>  

There were a variety of weapons housed inside the fort to attack enemy and defend the fort. There are basically two types of such instruments. One is sthira and the other cala. Dr. Raghavan in his Mechanical Contrivances presents a clear picture of the various yantras or weapons used in forts.<ref name=":1">Raghavan, V. (1952) ''Yantras or Mechanical Contrivances in  Ancient India''. Bangalore: The Indian Institute of Culture</ref>  

Sthira(स्थिरयन्त्रम्) types are :  Sarvatobhadra (सर्वतोभद्रः)- A Sharp edged wheel placed on wall that is rotated to fling stones ; Jamadagnya (जमदग्नीययन्त्रम्)-mechanical arrow thrower that is placed behind a wall to shoot arrows through crevices in the wall; Bahumukha (बहुमुखः)– A leather-covered elevation and mount for archers to enable shooting all around; Vishvasaghati (विश्वासघाटी)– It kills people as it falls and pounds them ; Sanghati (सङ्घाटी) - It is made of wood and used to set fire to enemy fortifications; Yanika (यानिकः) is a yantra on wheels that discharges batons ; Parjanyaka (पर्जन्यकः) is a fire-quencher; Bahu (बाहुः)is a torture-tool which crushes a person to death. This could be small sized or a overhead column.

Sthira(स्थिरयन्त्रम्) types are :  Sarvatobhadra (सर्वतोभद्रः)- A Sharp edged wheel placed on wall that is rotated to fling stones ; Jamadagnya (जमदग्नीययन्त्रम्)-mechanical arrow thrower that is placed behind a wall to shoot arrows through crevices in the wall; Bahumukha (बहुमुखः)– A leather-covered elevation and mount for archers to enable shooting all around; Vishvasaghati (विश्वासघाटी)– It kills people as it falls and pounds them ; Sanghati (सङ्घाटी) - It is made of wood and used to set fire to enemy fortifications; Yanika (यानिकः) is a yantra on wheels that discharges batons ; Parjanyaka (पर्जन्यकः) is a fire-quencher; Bahu (बाहुः)is a torture-tool which crushes a person to death. This could be small sized or a overhead column.