Husqvarna EMERALD 116 mechanical sewing machine The EMERALD™ 116 is a complete all-rouder offering many practical features; a hard cover for storage, a handy Sewing Guide Reference Chart, a built-in needle threader and an effortless one-step buttonhole. Perfect stitches and buttonholes Features a useful Sewing Guide Reference Chart. The chart recommends the right presser foot, stitch length and width, thread tension and presser foot pressure for different fabrics and techniques. Features 60 Stitch Functions. It offers utility, decorative and stretch stitches as well as a one-step buttonhole. The stitch length and width can be adjusted.