User's Manual

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into the Multiplanar Accessory Housing Joint. It can be used to measure force during lifting, carrying or
other simulated tasks using the shelf..
The second shelf has an attachment at its base and can be inserted directly into either the upper or lower
accessory arm of the ER. This shelf is inserted into the accessory arms of the ER in the exact same
manner that the Multiplanar Accessory Housing Joint is inserted into the ER arms. Since this shelf is not
attached to the Multiplanar Accessory Housing Joint, it is unable to measure force. This shelf is referred
to as the Independent Shelf.
Both shelves have a safety strip at one end. This strip acts as a stopper for objects or weights placed on
the shelf during testing, preventing the object or weight from falling off.
Attaching the Accessory ER shelf
Attach the Multiplanar Accessory Housing Joint to either the upper or lower accessory arm.
Locate the top handle (identified below by the arrow) on the right hand side of the Multiplanar Accessory
Housing Joint.
Gently give the handle an approximately ¼ turn in a counterclockwise direction.
Pull the handle outward (further to the right) and twist it gently. This will create and maintain a space in
the accessory housing mechanism.
Lift the accessory ER shelf and observe its end. There is a rounded side and a flattened side on the end
of the shelf. Insert the shelf with the flattened side toward the right side of the accessory housing
The accessory ER shelf
attaches to the accessory arm
through the Multiplanar
Accessory Housing Joint.
The independent ER shelf
attaches directly to the upper
or lower accessory arm.