The Gallows Tool has been around for a very long time, and it is because it has been time tested and proven.
Acts like a third hand
Used primarily for tying of parachute flies
Spring maintains tension on either the tying thread or on the post, as you wind your hackles.
Very simple to use
Stainless Steel and Black Delrin construction
Fits most vises having 3/8” diameter shafts
Provides maximum work area
Easy take down for travel