The Three F's Of Product Design Are Form Fit And - When deciding whether to introduce a new part number or create a new revision of an existing part. Web form / fit / function rule. Web in the realm of product development and engineering, the concept of form, fit and function (fff) (sometimes written as.
When deciding whether to introduce a new part number or create a new revision of an existing part. Web in the realm of product development and engineering, the concept of form, fit and function (fff) (sometimes written as. Web form / fit / function rule.