The Hackle Gauge helps to choose the hackle or
hook size quickly and easily. Just bend an hackle
around the plastic pin and read the appropriate hook
size on the curved scale. The graphic clearly
indicates the sizes of the hooks from 4 to 22 and the
colors of the curved scale allow a good view with both
light and dark hackles. It can be applied directly to the
vise stem and can be rotated when not in use.
