The seam gauge from Prym is another practical aid in the range of flexible plastic hand gauges. It does not matter how thick the fabric is, or how wide the seam should be. The graduated notches marked in various sizes from 1 cm to 3.5 cm make marking seams mere child’s play. The seam gauge also has 45 and 90 degree angle markings. This allows you to master even tricky seams and mitred corners without difficulty. Marking button-holes on shirts and blouses also becomes quite simple with the transparent plastic seam gauge.