The Cocoknits super handy 'Check Your Gauge Cloth' is a great idea. Cocoknits wanted to provide a way for crafters to make sure their knits were blocking to the desired measurements and came up with a thin cotton cloth, woven to provide gingham squares measuring 2.5cm (1"). The cloth can be used for both wet blocking as well as steam blocking. The thread is pre-treated before the fabric is woven to prevent stretching, shrinking or distortion.
The cloth measures 122cm x 122cm (48" x 48") and is tested for colourfastness.