The 02-7396-00 skein holder is an accessory device designed to hold textile yarn skeins flush and flat at the port for measurement. It provides a uniform white background or surround to back the sample and apply even pressure.
Typically we would recommend averaging multiple readings (3 - 4) per measurement with a 90 degree rotation between each reading.
FAQ: "Do you have the approximate dimensions? Can it be used on a ColorFlex EZ?"
The white backing on the skein holder is approximately 150 mm x 150 mm, more than large enough to fit on a CFEZ and most of our other models as well.