The handy Bohin buttonhole measuring ruler is multifunctional. It not only ensures a neat distribution of buttonholes, but also, for example other types of closures, eyelets, studs and pleats. The buttonhole ruler is constructed like a harmonica and you can indicate the distance between two points yourself by sliding it further closed or open. The smallest distance, with the divider fully closed, is 1cm while the largest distance, with the ruler fully open, is 8.7cm. The holes in the divider make it easy for you to draw the measured points on the fabric with a marking pen or chalk pencil. With this tool you can note down up to 8 buttonholes. It is made from aluminium and is grey in colour.