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ISO 4814:1980

$11.05

Household sewing machines — Determination of stability of needle thread tension

Published By Publication Date Number of Pages
ISO 1980-02 4
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Specifies a method of test for determining the variation of needle thread tension at given positions of the tension regulator. The method is applicable to motor-operated household sewing machines, but it may also be possible to apply it to hand- or treadle-operated machines. Includes additionally to principle, material and apparatus, procedure, expression of results and test report an annex which specifies the cotton thread.

ISO 4814:1980
$11.05