For comparative
study of right hand and left hand finger dexterity of a person. It
consists of a wooden box containing 100 holes. There are pins
kept separately to be placed in these holes. While keeping the apparatus
on the right side of the subject, he/she is asked to insert pins in the holes
with right hand. Time taken and errors committed are noted. Same procedure is
repeated with left hand keeping the instrument to the left hand side of the
subject.
