Document BRMyBKpp2aew8LV75mkQdmBym

10--Human Factors Engineering Fic 10-13 --Top Shape coding Two sets of knobs for levers that are distinguishable by touch alone Bottom Texture coding Ten texture codings that can be distinguished Courtesy Deportment of the Air Force, Wnght-Patterson AFB Top W O Jenkms, Psychological Research on Equip ment DesignResearch Report 19, 1947 Bottom / V Bradley, "Tactual Coding of Cylindrical Knobs " Tech Report 59-182, 1959 their location For example, all brakes on forklift trucks can be placed on the left side regardless of model Location coding can also be achieved by piovidmg a minimum distance between controls The advantages of coding by location aie the same as those foi shape and textuie Dis advantages include 234 1 Limited number of contiols that can be identified 2 Increased space requirements 3 Identification not as certain as xvith other types of coding Colob Color may also be used as a cod- i