This paper reports on the working principles of an instrument designed and built to measure the irregularity of sliver or roving. To verify the results of this instrument, the same roving is tested by the Uster II and Uster IV, and their results are compared with the new instrument. This paper also reports the effects of parameters such as the weight used to compress the sliver/roving passing between the groove-tongue disks of the instrument and the measuring speed and measuring length of the sliver or roving in the tests. The results indicate that these parameters do not considerably affect the results.
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