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This SAE Standard specifies a stationary test method for determining and documenting the masking effect caused by parts of the base machine with equipment as specified by the manufacturer within a visibility test circle around the eye position of a seated operator. It applies to earthmoving machinery which has a specific seated operator’s position.

General criteria are presented as guidelines for: control device location, resistance, and actuation of hand and foot controls by the machine’s operator. The criteria are based upon physical limitations as defined by human factors engineering principles.

This SAE Recommended Practice defines the worldwide human physical dimensions to be used in construction, general purpose industrial, agricultural tractors, forestry and specialized mining machinery categories as defined in SAE J1116 JUN86.