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## Relation between Two Fineness Measuring Systems

Relation between Two Fineness Measuring Systems
Rana Sohel
Executive Engineer
Sunman Textile Mills Ltd. Chittagong
Cell: +8801912-420118
Email: rsohel07tex@gmail.com

System of measuring fineness:
The fineness of cotton fiber is measured by following two systems:
American system :
In this system the linear density is expressed in microgram per inch.

Here, the unit of weight = microgram (gm X 10-6)

The unit of length = inch

British system:
In this system the linear density is either the fiber wt, per cm or the hair wt per cm, H

Here, the unit of weight = milligram X 10-5

The unit of length = cm

The unit of fineness = H X 10-5 mg/cm

Relation between Two Fineness Measuring Systems

American linear density = Fiber wt in gm X 10-6/inch
= A X 10-6 gm/inch

British linear density = Fiber wt in mg X 10-5/cm

= Fiber wt in gm X 10-3 X 10-5/cm
= H X 10-8 gm/cm
= H X 10-8 X 2.54 gm/inch

We have, A X 10-6 = H X 10-8 X 2.54

=> A = H X 10-2 X 2.54

This is the derived relationship between them.

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