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ISO 137:1975 [ Withdrawn ]
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ISO 137:1975 Wool -- Determination of fibre diameter -- Projection microscope method
standard by International Organization for Standardization, 02/01/1975
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Full Description
Projection on a screen of the magnified images of the profiles of wool fibre pieces and measurement of their width by means of a graduated scale. The operating technique assures a random sampling of the fibres to be measured. Suitable for wool fibres in any form and also for other fibres of reasonably circular cross-section.