Woggle

A woggle (or neckerchief slide) is a device to fasten the neckerchief, or scarf, worn as part of the Scout or Girl Guides uniform, originated by a Scout in the 1920s.

In form and function, a woggle is similar to the Tie ring, a formal piece of jewelry used to secure the bulk of a Necktie or an Ascot tie, popularized in the 1800s.