The Accessibility, During Recovery Of Small Parts That Fall From The Workbench, Varies Directly With The Size Of The Part -- And Inversely With Its Importance To The Completion Of Work Underway.

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The accessibility, during recovery of small parts that fall from the workbench,
varies directly with the size of the part -- and inversely with
its importance to the completion of work underway.
-- The First Spare Parts Principle

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