This reversible edging was called “Edging with close heading” in the Australian newspaper, Fitzroy City Press, 24 January 1890. With just 9 stitches to start and 6 pattern rows with a lot of plain knitting, it’s suitable for a newer knitter. This edging can be blocked straight but, with its natural curve, I recommend sewing it to a curved item.
The sample is 1 3/8 inches wide at the points when knit to the stated gauge.

Skills needed: cast on, slip purl-wise, knit, yarn over, knit and purl in the yarn over, k2tog and bind off in knit stitch.

Gauge is not important in this pattern. Any block-able thread/yarn will work. Make a swatch to check size and appearance.

3 yards of #10 crochet cotton thread will make about 1.4 inches in the stated gauge.