A machinist's tool used in a milling machine or drill press to accurately locate the edge of a workpiece or a center punch mark. It features a pointed or spherical tip held by spring tension. As the spindle turns, the tip wobbles or wriggles until it makes perfect contact with the edge, at which point it suddenly kicks out of alignment.
Heard on the job
Grab the wriggler and find the edge of that aluminum block before we start drilling the bolt pattern.
Also heard as
- wiggler
- edge finder