Guides
What is a mecaquartz watch? Mechaquartz or meca-quartz typically refers to a chronograph watch movement that uses quartz technology for...
There is a lot of confusion in the watch community about Seiko and Seiko-related watches and movements. Most of the...
James recently asked Caliber Corner: I have an ETA movement I removed from a Royce military style however all I...
According to Grand Seiko: The caliber number is a four-digit number that indicates the model of a movement (mechanical part...
Some watch collectors think one surefire way to spot a fake Rolex movement is to wind the crown clockwise to...
“Workhorse movement” is a label given to certain watch movements by enthusiasts and collectors in many watch communities. The term...
This is the original lecture given by George Daniels at the American Watchmakers-Clockmakers Institute (AWCI) in June of 1990. This...
This is a fascinating lecture by Roger W. Smith, presented at the Horological Society of New York in December 2017....
Invention of the Ball Bearing Rotor In 1948, Eterna announced a friction-reducing ball-bearing mounted rotor system as part of the...
What is a Flyback Chronograph? In a traditional chronograph watch, the button sequence is top (start), top (stop), bottom (reset)....
If you’ve been in the Caliber Corner Community for some time, you’ve seen the word lignes here and there. What...
There are two kinds of mechanical watches: Automatic and Manual. The difference between the two is that one winds itself...
According to Orient: Check the caliber number by referring to the model number of your watch or the case code...
The second hand on my Miyota powered watch isn’t smooth… why? Is your automatic timepiece ticking like a quartz watch?...
The Magic Lever was introduced by Seiko in 1959 with the purpose of improving the efficiency of the winding system....
This is the original lecture given by Dr. Matthew Clark on the topic of isochronism and positional adjustment. Dr. Matthew...
This is the original lecture given by Dr. Matthew Clark on the topic of Hairspring Dynamics for American Watchmakers-Clockmakers Institute...
Paraflex is the name of Rolex’s proprietary anti-shock system for their automatic watch movements. In technical terms, it is a...
Diashock is the name of Seiko Watch Corporations’s proprietary anti-shock system (or shock absorber) for mechanical/automatic watch movements. It was...
Glashutte Original is one of the few brands that publishes a price list for service. At the time of this...
In the watch community, COSC and chronometer are often used interchangeably, sometimes incorrectly. It’s like whiskey and bourbon: all bourbon...
In Omega’s own words: “The introduction of the OMEGA Co-Axial escapement in 1999 signalled a revolution in modern mechanical watchmaking....
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Recent Comments
Hello All, catching up to the comments. I have a Bulova 97B110 with a bad…
Typos help with SEO and to make sure something shows up when users search the…
Myslím že je to tak. Zepředu i zezadu je to podobné, i když zezadu trochu…
Kenissi not Kenessi!
This movement can be found in the Henry Archer Nordso
I have a very old Orient watch. At the back, I can only find these…
I have the Y675 for the SII union watch, its still made in japan