Gauge
(Sc, ch 3) 3 times in pat = 4”/10 cm
15 ch sts and 7 rows = 5” (12.5 cm) in pat

Note
This pattern appears to be included twice in this pattern booklet, just made with two different suggested yarns and names (#7 Openwork Shawl & #12 Lucky Shawl) but the instructions themselves are identical.