“…Carter (1986) defines flexibility as a collection of properties of a manufacturing system that support changes in production activities or capabilities and discusses how different types of flexibility impact production in different time frames including very short term, short term, medium term and long term. Son and Park (1987) define flexibility as a measure of manufacturing performance which indicates the adaptability of manufacturing systems to changes in the manufacturing environment and consider four different types of flexibility relating to, equipment; Product; process and demand. Sethi and Sethi (1990) define flexibility as adaptability of a system to a wide range of possible environments that may encounter and discuss eleven different types of flexibility which comprise: machine, material handling, operation, process, product, routing, volume, expansion, program, production and market.…”