Bergeon 4733, Cannon Pinion Tightener with Regulated Opening System, Swiss Made | eBay
Bergeon 4733 Cannon Pinion Tightener – Time Connection II, Inc
This is our watchmaker using a cannon pinion tightening tool! This tool is used when the cannon pinion is slipping on a watch. ⌚️ 🙌🏽 Let us know if... | By Time Keeper | Facebook
Dave's Watch Parts and Tools - Cannon pinion Tools