Tiemco Twin Hackle Gauge

To set the gauge, just slide down the stem of the fly tying vise through the hole. The hole is a little bigger than the diameter of vise stem so that the gauge will angle towards the tier and rotate easily while not in use. Fits onto most vise stems.

Experts know that they need two different sizes of hackle in order to tie beautiful flies, the TMC Twin Hackle Gauge has two pins; one is for standard patterns, the other one is for parachute patterns. 

The gauge is based on the TMC100 standard dry fly hook.