Compare Tin Spring No.1 with the original spring-hinge component before fitting. Install it only in a compatible temple spring mechanism, reassemble the joint carefully, and check that the temple opens and returns smoothly.
When to use
Use when a compatible spectacle spring-hinge or temple mechanism requires a No.1 replacement spring component.
Where to use
Use inside compatible spectacle or sunglass temple spring-hinge mechanisms that match Tin Spring No.1.
