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This instrument is used to determine the hardness for yarn bobbins, warp beams etc. To avoid a damage of bobbins and
warp beams it is equipped with a ball-shaped indentation body. the covered distance of the indentation ball is proportional to the winding hardness and its transmitted by means
of a movement (r=55 mm), for bobbins with a diameter of more then 400mm a flat working face is recommended. Depending on the material to be tested. Hardness tester with an
indentation ball of 2.5 Ø mm , 5 Ø mm or 10 Ø mm are available . |
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