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SEA-SAW WATER PUMP (TPJ_MCH_7906 )
WIND POWER RICE MILL (TPJ_MCH_7905 )
TREBUCHET (TPJ_MCH_7920 )
CHAMELION (TPJ_MCH_7922 )
MECHANICAL ADVANTAGES OF PULLEYS (TPJ_MCH_7907 )
WIND MILL WATER PUMP (TPJ_MCH_7904 )
PEAKING BIRD (TPJ_MCH_7918 )
BI-PED ROBOT (TPJ_MCH_7923 )
MOTORISED CAR (TPJ_MCH_7919 )
MUSICAL DRUM (TPJ_MCH_7921 )