This handy gauge fits most vise stems. To determine hackle size, simply bend the hackle around the pin at the bottom of the gauge. This hackle will flare out and the tips will indicate on the curved graph the correct size hackle. To determine hook size simply place the hook on the hooks pictured on the gauge. This gauge will rotate freely on the vise stem so it may be swung out of the way when not in use. it will correctly identify size 4-22 hackles and 4-16 hook sizes.
Griffin Hackle & Hook Gauge
Griffin Hook and Hackle Gauge — Rangeley Region Sports Shop
Griffin Hook & Hackle Gauge
Griffin Hook & Hackle Gauge, Griffin
Griffin Hook & Hackle Gauge - Wilkinson Fly Fishing LLC
Hackle gauge— two types : r/flytying
Badger Creek Standard Hackle Gauge, Terra Wood Hackle Gauge - On
Hackle Gauge at The Fly Shop
Griffin Hook & Hackle Gauge
Hareline Hackle, Hook and Bead Gauge Anodized Brown #40 - Hareline
Griffin Enterprises Griffin Hackle Gauge
Griffin Hook and Hackle Gauge
Fly Tying – TaleTellers Fly Shop
Griffin Hook & Hackle Gauge