60 cylinder
1 8/32 #1 tension

20 rows 1x1 rib
30 rows 1x3 rib
add waste yarn across 7 sts for thumb
10 rows 1x3 rib
10 rows 1x1 rib
picked up a total of 20 sts and hand knit 1x1 rib for thumb for 8 rows

Next time I will center the thumb hole within the 40 rows of 1x3 rib for my size hand or add an extra 10 rows of 1x3 rib for a larger hand.