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.