Numbers based on 94840 Dry Fly hooks, Fits on stem of most vises
Griffin Hook & Hackle Gauge - Troutlore Flytying Store
Griffin Hook & Hackle Gauge - Troutlore Flytying Store
Hackle gauge - The Classic Fly Rod Forum
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Griffin Hook & Hackle Gauge - Blue Ribbon Flies
Griffin Hook & Hackle Gauge, Griffin
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Griffin Enterprises - Reid's Fly Shop
Renzetti Traveler pedistal base, Loon tying tools, griffin hackle gauge
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Griffin Hackle Gauge, Threaders, Threader/Cleaner - On-Line Fly Tying Magazine and Fly Tying Catalog
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.
Hackle Hook Gauge - Griffin