Addi Needle Gauge
Keep this handy little Addi needle gauge in your knitting kit and you're all set to find the right pair of needles from that anonymous stack - you know the ones with the sizes rubbed off due to all the yarn-love!
Measures only 6cm x 6cm - fits easily into your project bag
Gauges from 1.5mm to 10mm needles
Has a swatch gauge along the top
Includes a retractable blade in case you forget your scissors