Rules Related to the  use  the Human  Body:

Related to the  use  the Human  Body :

a.   The two  hands should  beings  as well as  complete their  motions  at the same  time.

b.   The two  hands should not be idle at the same  time  except during rest  periods.

c.   Motions  of the arms should be made in opposite and symmetrical directions and  should be made simultaneously.

d.   Hand motions should  be confined to the lowest classifications with  which it is  possible to  perform the work  satisfactorily.

e.   Momentum should be employed to assist the worker wherever possible and it should be  reduced to a minimum if it must  be over vole by muscular effort.

f.   Smooth continuous motions of the hands are preferable to zing zag  motions or staring t line  motions  involving sudden and sharp changes of direction.

g.  Ballistic movements are faster easier and over accurate than  restricted( Fixation) or  controlled movements.

h.  Rhythm is essential for the smooth and automatic performance of an operation and  the work  should  be arranged to permit an easy and natural rhythm wherever possible.