This pattern is for a crew neck pullover sweater with set in sleeves.
Exact yarn and needle size not given; pattern suggests worsted-weight yarn and size 7-8 (4.5-5.0 mm) would be a good starting place for most people. Use a needle about two sizes smaller for the ribbing.
Yarn quantity given as 5.8 oz (about 165 grams), but this will presumably vary with yarn thickness.
Chest: 24 inches/61 cm
Sleeve Length: 9 inches/23cm