It is useful to identify the primary hand movement
area.This is between 15 and 40 cm from the front of
the body and within 40 cm from the side of the
body at elbow height.The secondary hand
movement area is beyond the primary area but
within 60 cm from the side of the body at elbow
height. Position the primary controls and other
primary items (hand tools, parts) within the primary
area, and secondary controls and other secondary
items within the secondary area.