An automatic transmission is provided with three planetary gear units and five friction elements that establish at least six forward speeds and one reverse speed by engaging different combinations of three out of five friction elements simultaneously. The camera is then used to capture images of indicia associated with products in a store, such as bar codes. A laser diode mounted in a module emits a visible laser beam upon application of power from a battery that is controlled by a switch. So the doctor can get the probing tip to the aimed point easily.