Measurements
Length excluding rib
12.5, 15 cm
5, 6 inches

Each pamphlet has a different set of recommended yarns. The following are from the Peter Gregory version.

Materials
PETER GREGORY ARAN KNITTING
Aran Knitting Wool/Nylon (M.W.) or All Wool Aran
1, 2 balls or hanks
Cable needle.

M.W. = Machine Washable