Emphasize that both hands should be operating at all times: one picking up a pin, one a washer, one a collar, and so on,
The subject should be allowed to make four or five complete assemblies before the test is begun to make certain the subject fully understands the “alternating” procedure. The subject must keep both hands moving at the same time. If he or she fails to do this, the administrator should give further instructions. Note: If the subject is left-handed, the washer and collar locations in the cups are switched. The subject begins by picking up the pin with his/her left hand, the collar with his/her right hand, the collar with his/her left hand, another washer with his/her right hand and so on through all assemblies.