Cornerstone Service

Cornerstone Service 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.

Accutron caliber 214 movement service in process.
05/23/2026

Accutron caliber 214 movement service in process.

05/20/2026
There's tiny screws, and then there are tiny screws (phillips).
05/05/2026

There's tiny screws, and then there are tiny screws (phillips).

check out #18
04/29/2026

check out #18

1.1K likes, 143 comments. "20 Watch Brands You NEED To Ditch (And 5 You Should Switch To)"

another finished project... a well preserved Heuer with Valjoux 69 movement.
04/22/2026

another finished project... a well preserved Heuer with Valjoux 69 movement.

seeing this leads me to understand why the industry has shifted to a barrel complete as a regular practice during after-...
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.

If a little will do a little bit of good, than will a lot do a lot of good?
04/08/2026

If a little will do a little bit of good, than will a lot do a lot of good?

Hamilton caliber 780 launched in 1965
02/23/2026

Hamilton caliber 780 launched in 1965

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 je...
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.

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

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