No measurements or gauge is given.

From the pattern description:
“This vest is knitted with white Shetland wool and coarse steel needles. It is in plain knitting throughout the body and is finished at the neck, sleeves and lower edge with a border in ribbed knitting.”

Despite the pattern’s name, this is a pullover sweater with a buttoned placket neck and drawstring funnel collar. “Vest” can mean undershirt, and this garment was probably meant to be a winter undergarment.