It is used to detect the heat shrinkage of various chemical fibers and short fibers such as wool class.
Standards: GB/T6505-1986; FZ/T-T50004-1991
Main Technical Data
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1.Heat shrinkage rate:
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①Hot air 180℃; ②Boiling water 100℃
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2.Measuring method:
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Bundling method
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3. Projection objective:
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①Focal length: f=84.47mm②Relative aperture: D/f=1; 4.6
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4. Instrument magnification times:
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5
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5. Projection Screen Size:
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60×60mm
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6. Hand-wheel Graduation:
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0.01mm
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7. Measuring length:
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16-20mm
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