Tips For Collectors
Big towns, little towns, even small villages have jewelry stores which sell both old and new wrist watches. Do not hesitate to ask if they… Read More »Tips For Collectors
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Magnetism – what is it?
Magnetism – what is it? Magnetism is an ever-constant and insidious enemy to horologists. The means by which a watch may be magnetized are so… Read More »Magnetism – what is it?
EXPLANATION OF A CHRONOGRAPH
A chronograph is a precision instrument that measures and registers time. To be more specific, it is an ordinary watch which registers the time of… Read More »EXPLANATION OF A CHRONOGRAPH
Landeron 48 Movement specifications and photo
Landeron 48 is Swiss movement from 1960’s. There are two options with 30 and 45 minutes indication on the chronograph. 2 registers on the dial… Read More »Landeron 48 Movement specifications and photo
How exactly watches work?
Balance wheel with hair spring A watch is a small sturdy machine for telling time, operated by a coiled-spring motor and controlled by the oscillations… Read More »How exactly watches work?
Identifying a Chronograph or Stop watch
Identifying a Chronograph or Stop watch The chronograph and stop watch are very similar in appearance in many respects, but there is a difference which… Read More »Identifying a Chronograph or Stop watch
Landeron 187 Movement Specifications and Photo
Landeron 187 is Swiss movement from 1960’s. There are two options with 30 and 45 minutes indication on the chronograph. 2 registers on the dial… Read More »Landeron 187 Movement Specifications and Photo
Glossary of Terms – Watches
Addendum -The portion of a tooth of a wheel or pinionbeyond the pitch circle. Arbor – Axis of the balance wheel or mainspring barrel. Balance… Read More »Glossary of Terms – Watches
Venus 150 movement specifications and photo
Venus 150 is Swiss movement from 1960’s. There are two options with 30 and 45 minutes indication on the chronograph. 2 registers on the… Read More »Venus 150 movement specifications and photo
DOXA SUB Professional Diver – History
Mr. Urs Eschle was the product manager of the original DOXA SUB and head of operations at the company in the sixties (reporting directly to… Read More »DOXA SUB Professional Diver – History
Watch Repair – Poising Balance
The balance wheel must be poised after it has been trued. In closely rated position watches, such as railroad grade, poising of the balance is… Read More »Watch Repair – Poising Balance
Valjoux 7750 History
1970 was a year of great ups and downs for the mechanical chronograph. The vaunted Omega Speedmaster helped bring the crippled Apollo 13 space capsule… Read More »Valjoux 7750 History