This needle sizer from Knit Pro is circular and compact. It measures 2" across.
One side has a metric gauge for needles from 2mm - 12mm and the reverse has US sizes from 0 - 17.
There is a hole to thread a fine piece of cord through should you wish to suspend it from a knitting bag.
It is available in white or green - please select your colour choice from the drop down box.
Please click on the thumbnails to enlarge the views