Industrial Engineering and Production Management
The disadvantage of product layout is

Production time is longer, requiring more goods in inventory
Skilled labour to operate machines
High cost of inspection
High initial investment for the specialized facilities

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Industrial Engineering and Production Management
Micro motion study is

Study of man and machine conducted simultaneously
Motion study of a sequence of operations conducted systematically
Motion study observed on enhanced time intervals
Analysis of a man-work method by using a motion picture camera with a timing device in the field of view

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