ClockSavant Watch Collecting, Servicing, & Repair Blog

Bringing a vintage watch back to life- hairspring pinning

Bringing a vintage watch back to life- hairspring pinning

by Eric Greenberg
A vintage watch without a correct hairspring is no longer a watch— it’s parts. If a hairspring is damaged beyond repair or incorrect (aka a past wa...
Servicing Considerations for Hahn Chronographs (Pre-Landeron)

Servicing Considerations for Hahn Chronographs (Pre-Landeron)

by Eric Greenberg
Hahn and Landeron evolved to become one company. Despite innovating the cam-based chronograph design, they also owned the original column wheel chr...
Jacot Tool - Pivot Polishing

Jacot Tool - Pivot Polishing

by Eric Greenberg
This is a specialized tool used to polish watch pivots called a Jacot tool or Jacot lathe. Significant pivot wear and corrosion can greatly impact...
Considerations in Servicing the Valjoux 72C (Valjoux 72)

Considerations in Servicing the Valjoux 72C (Valjoux 72)

by Eric Greenberg
The Valjoux calibre 72 (72C) represented a major milestone in the development of complicated wristwatch-sized chronographs. It had an extraordinari...
Servicing a Movado Kingmatic Calibre 531 from approximately 1960

Servicing a Movado Kingmatic Calibre 531 from approximately 1960

by Eric Greenberg
I recently serviced this beautiful Movado Kingmatic Calibre 531 from approximately 1960 for one of our regular customers. I especially like the age...
What cheap watch servicing can get you

What cheap watch servicing can get you

by Eric Greenberg
Here’s an example of what cheap watch servicing can get you. In this case a mangled hairspring, the specialty of the botch watchmaker. All day long...
Watch running too fast? Overbanking and knocking

Watch running too fast? Overbanking and knocking

by Eric Greenberg
Continuous overbanking, or knocking, occurs on a watch when when the watch’s balance wheel swing (amplitude) is too large. The watch’s escapement r...
Servicing the 1973 Omega 1310 Megaquartz - Omega's first in-house quartz movement

Servicing the 1973 Omega 1310 Megaquartz - Omega's first in-house quartz movement

by Eric Greenberg
It’s been my experience that once a new collector “gets the bug” for mechanical watches, soon they lose all interest in quartz watches.  However, e...
The Depthing Tool - How deep is your watchmaker’s investment?

The Depthing Tool - How deep is your watchmaker’s investment?

by Eric Greenberg
This is known as a depthing tool, this large version is used for clock restoration. and an identical but smaller version used for watch restoration...
Watch Escapement Meters - Fine-tuning the escapement and pallet

Watch Escapement Meters - Fine-tuning the escapement and pallet

by Eric Greenberg
Watch escapement meters are used to adjust, in a methodical and measured fashion, watch pallet stone depth while the shellac holding the stones i...
Omega 321 and Lemania 27ch Servicing - Resolving the Lazy Hour Register

Omega 321 and Lemania 27ch Servicing - Resolving the Lazy Hour Register

by Eric Greenberg
The Omega 321 and Lemania 27ch can suffer from a problem known as “lazy hour” wherein the hour register increments somewhat, or a lot, even if the ...
Watchmaker Screw Head Polisher - Lapping & Polishing

Watchmaker Screw Head Polisher - Lapping & Polishing

by Eric Greenberg
This is a watchmaker screw head polisher. This tool is likely over 100 years old and still highly useful today. To the right of the tool are stack...