Setup
In preparation for the Two Arm Coordination Test, you will need an Economy Clock/Counter (suggested is
LIC Model 54060A), two connecting cables (suggested is LIC Model 58085), and a stopwatch (suggested
is LIC Model 00033A).
Install the roto-clip onto stylus and seat in groove. Place spring over stylus and from the underside of the
smaller arms, insert the stylus into the center pivot hole. Thread castle nut onto stylus.
The Tracing Apparatus is connected to the Economy
Clock/Counter, using the two connecting cables. The
first cable connects the black binding post on the
Tracing Apparatus to the “GND” input on the Economy
Clock/Counter. Likewise, the second cable connects
the red binding post of the Tracing Apparatus to the
“RUN” input on the Economy Clock/Counter.
The client sits. Each hand holds a handle of the
Tracing Apparatus. Set the Clock/Counter to zero.
Set the stopwatch to zero.
Maintenance
The black star pattern on the Tracing Apparatus should be inspected periodically for scratches. If a scratch
is deep enough, when the stylus touches it, it will be recorded as a contact (error).
You may repair a scratch on the black star with the use of black model airplane paint.
Factor Description
This factor involves the ability to move both arms in a simultaneous and coordinated manner. The
movement involved is that of the whole arm, as opposed to the two-hand coordination factor. Two-arm
coordination is most related to the D.O.T. (Things category of Operating-Controlling and Driving-Operation)
While it is used in operating a large amount of production equipment, it is mostly clearly seen in the job of
crane operator. Even though many jobs require two-arm coordination also require, at least, some degree
of visual acuity, the two are not necessarily related. Therefore, blind individuals should have the same
range of ability in two-arm coordination as the sighted population. Also, two-arm coordination does not
use grasping ability like the manual dexterity.
Administration
The client sits directly in front of the two-arm tracing apparatus. Be sure that the apparatus has been
assembled according to the set-up instructions.
The test is composed of two operations: tracing a star in a clockwise direction and in a counter-clockwise
direction. Show the client how to manipulate the stylus by moving the handles of the apparatus; spreading
the handles makes the stylus move toward the top of the board; bringing the handles together moves
the stylus downward on the board. Lateral movement is accomplished by simultaneously moving both
handles to the left or to the right.
2
3700 Sagmore Pkwy N Lafayette, IN 47904 USA . Ph: 765-423-1505
Lafayette Instrument Two-Arm Coordination Test
To Red Post To Black Post
Economy Clock/Counter
Model 54060A