This curious little item arrived, I have a plastic one which measures in imperial measurements. This aluminium  sewing gauge measures in centimetres and millimetres.

The instructions state this gauge will allow you to mark seam allowances quickly and accurately, it’s suitable for most seam lines as you can set the gauge to your requirements anywhere between 1 to 5cm in 5mm increments. Made from light metal, this gauge can also be used when folding and creasing fabrics using an iron. It also includes very handy buttonhole guide which is particularly useful for positioning and marking up during pattern drafting.

This gauge is slightly bigger than a credit card, so extremely handy to take to classes. The seam gauge is made of sturdy aluminium, so it resists bending and can be used with an iron, but ensure you allow the gauge to cool before handling.

The markings are extremely clear to read, being red they really stand out. I am a quilter but whilst making undergarments for Luna I found this gauge invaluable. I would highly recommend this product. The RRP is £8.80 for this handy product.