Cornerstone Service
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Independant After-Sale Watch & Clock Service Provider Timepiece service & restoration, SAV consulting, after-sale service education, and technical writing.
We believe service is the Cornerstone of all business.
05/23/2026
Accutron caliber 214 movement service in process.
05/20/2026
05/05/2026
There's tiny screws, and then there are tiny screws (phillips).
04/29/2026
check out #18
Luxury Secret 1.1K likes, 143 comments. "20 Watch Brands You NEED To Ditch (And 5 You Should Switch To)"
04/22/2026
another finished project... a well preserved Heuer with Valjoux 69 movement.
04/10/2026
seeing this leads me to understand why the industry has shifted to a barrel complete as a regular practice during after-sales service. That said, I still think this is a poor decision.
04/08/2026
If a little will do a little bit of good, than will a lot do a lot of good?
02/23/2026
Hamilton caliber 780 launched in 1965
02/23/2026
Not something you see often, and I found hard to photograph with my cell phone. No it's not a drop of oil on this cap jewel, it's actually a worn spit from the balance pivot.
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Address
PO Box 8314
Gurnee, IL
60031
Opening Hours
| Monday | 9am - 5pm |
| Tuesday | 9am - 5pm |
| Wednesday | 9am - 5pm |
| Thursday | 9am - 5pm |
| Friday | 9am - 5pm |
| Saturday | 9am - 5pm |