Industrial Engineering and Production Management
Micro motion study is

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

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Industrial Engineering and Production Management
Slack represents the difference between the

Latest allowable time and the earliest expected time
Latest allowable time and the normal expected time
Normal allowable time and the latest expected time
Proposed allowable time and the earliest expected time

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