Griffin Hook & Hackle Gauge fits on vise shaft for instant use, delivering precise sizing right at the workbench. To determine hackle size, bend the hackle around the pin at the bottom of the gauge. To determine hook size, slide the hook to the corresponding scale at the top of the gauge. When not in use it pivots out of the way, keeping the workspace clean and ready for the next step.

The Griffin Hook & Hackle Gauge provides a single reference for hackle and hook sizing, built for fast bench work and repeatable results.

• Fits on vise shaft for instant use
• Hackle size determined by bending the hackle around the pin at the bottom of the gauge
• Hook size determined by sliding the hook to the corresponding scale at the top
• Pivots out of the way when not in use to keep the workspace clear