The Hareline Hackle, Hook, & Bead Gauge was designed to be the ultimate accessory for your fly tying vise. Simply slide the gauge onto the stem of your vise and you will have the ability to measure hackle, hook, and bead sizes within a matter of seconds. This beautifully designed gauge is made of anodized aluminum and is available in your choice of 3 popular colors. A must have tool for all fly tiers!

• Fits most standard vise stems (rubber o-ring included)
• Measures hook sizes 22 to 4
• Measures hackle sizes 22 to 4
• Measures bead sizes 1/16″ (1.5mm) to 7/32″ (5.5mm)