SimFlex Expanding Sewing Gauge Gives you fast and accurate measuring with multiple uses.
Buttoholes: Flex Gauge to the desired distance between buttons or buttonholes. Use the points and slots on the gauge to mark the position for buttons and buttonholes
Shirring, smocking, skirt and dress pleats: Flex gauge to the distance desired between pleats
Drapery pleats, tucks: Flex gauge to the desired distance between folds and tucks
Straight strips, Bias strips
And much more!