ctpctp:
lever_pp1
ctpctp:
lever_pp3
ctpctp:
lever_pp2
ctpctp:
bellcrank_pp1
ctpctp:
compound_lever_pp1
ctpctp:
basic_elements_family_tree_
ctpctp:
mechanical_advantage_1
ctpctp:
lever_pp4
ctpctp:
compound_lever_pp1
ctpctp:
travel_speed_1
ctpctp:
mixed_compound_levers_1
ctpctp:
crank_1
ctpctp:
crank_2
ctpctp:
crank_3
ctpctp:
crank_4
ctpctp:
crank_5
ctpctp:
crank_6
ctpctp:
slots_1
ctpctp:
wheel_1