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Polarising Projection Microscope

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Polarising Projection Microscope

The polarizing projection microscope is a widely used testing instrument in textile industry for close inspection of yarns. It magnifies the image of the yarn being tested and helps in easy evaluation of hairiness of the yarn along with thickness of the yarn etc. It is also used for cotton fiber maturity test.


A Polarising Projection microscope is a very useful testing instrument that is used for accuracy in inspection and assessment of yarn quality in textile industries. The yarn is inspected under a polarized light. Under the effect of polarized light, the sharpness and clarity of the test sample becomes magnified many times as compared to normal lights.

The microscope is used for the test as follows:

    • Evaluation of hairiness of a yarn.
    • Yarn thickness measurement.
    • Cotton fiber maturity test.
    • Evaluating the level of mercerization of a yarn.
    • For proper identification of different fibers.

The polarized projection Microscope is provided with a 200mm round grounded screen which is made from fine grain glass and can be rotated up to 360 degrees with the help of ball bearings. It also has a Fresnel lens for uniformity and brilliance of illumination during the test procedure.

There is a coaxial stage that is connected for easy and convenient movement of sample slides in to the instrument. The center of focus is adjusted with the use of a rack and pinion, vertical movement of stage is done with the help of a lever screw mechanism that is firmly graduated knob.

The equipment also comes with a halogen bulb with lows voltage operation and a power consumption of 100 watts along with an electric fuse and transformer for control of solid state light.

  • The lab testing instrument comes complete with a micrometer, dust cover, a spare bulb and a spare electrical fuse. 
  • There is a complete user manual provide with the machines.
  • Accurate and highly reliable results are obtained from the machines.
  • The instrument is easily operated with a power supply of 220volts, 50HZ, AC with single phase with a consumption of 250W power. 
  • The equipment has a screen that is rotatable to 3600 and can easily be calibrated with a micrometer which is provided with the equipment.
  • There are light intensity meter which can be controlled for variability. 
  • The equipment is provided with different objectives as follows: 5x, 10x, 20x and 40x.
  • The magnification power of the machine is 125x and goes up to 1000x.

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Polarising Projection Microscope