From pattern booklet:

Materials:

Requires 2 oz. PATONS BEEHIVE Baby Wool, Patonised. Two No 12 and two No 10 BEEHIVE needles, or QUEEN BEE if stainless rigid needles preferred, measured by BEEHIVE gauge. Two buttons.

Measurements:

To fit 17-19 inch chest. Length from top of shoulder, 9 ins. Sleeve seam, 4 1/2 ins.

Gauge measured using No 10 needles.