Armin Strom Mirrored Force Resonance

A Watchmaker’s Technical Look at the Armin Strom Mirrored Force Resonance Fire: A Dual-Balance Watch with a Difference – Reprise

The Armin Strom Mirrored Force Resonance Fire has captivated everybody with the mesmerizing appearance of its twin balances and the unusual, long, sinuous, grey spring gently oscillating along the middle of the watch. ‘The Horological Journal’ editor and watchmaker Justin Koullapis asks the question, “Does it live up to the hyperbole?”

Functions and indications of the George Daniels Space Travellers' watch

Equation of Time (EoT): What is It and What’s the Attraction? – Reprise

In its simplest form, the equation of time is defined as the difference between the time displayed by the position of the sun (as by a sundial) and the mean time displayed by any modern clock or watch. But that’s just the beginning. Watchmaker Ashton Tracy explains more.

Bathys Hawaii Cesium-133

Measuring the Time Between the Seconds: The Truth Behind High-Frequency Movements – Reprise

Marketing material for the modern mechanical watch almost always includes a description of the movement’s frequency. You may have even sensed that the higher the frequency, the more accurate a movement gets. But is this entirely true? Find out here.

Audemars Piguet Royal Oak Chronograph in stainless steel with blue dial

The Science of Steel: The Stuff of Cases, Mainsprings, Hairsprings, Pinions, Escapements and the Backbone of Watchmaking – Reprise

Joshua Munchow talks about steel here, the metal that made the world! Watch cases and other movement components are commonly made from certain stainless steels, 304 and 316L being the most frequent. It also happens that some brands hold exclusive rights to use specific alloys in the production of its watches. Here’s what you should know about steel.

Urwerk UR-CC1 in white gold

The Retrograde: One of My Favorite Complications – Reprise

The retrograde indication is one of Joshua Munchow’s favorite “Because We Can” (BWC) complications. Gears are an amazing invention and have allowed watchmakers to make incredible creations. Simple gear systems leave a multitude of openings for creativity. Look at some great retrogrades here.

Warning: Strong magnetic field ISO symbol

The Truth about Magnetism and Watches – Reprise

General everyday contact with magnets isn’t going to cause your beloved wristwatch any real harm, but overdoses of magnetism may still present a problem, causing erratic timing and even stoppage altogether as watchmaker Ashton Tracy explains. What to do when this happens?

Rolex Oyster Perpetual Sea-Dweller Deepsea with helium escape valve

Deeper, Further, Faster: Why do Some Dive Watches have Helium Escape Valves? – Reprise

Humans have long had a fascination with the depths of the ocean, striving to go ever deeper, ever further, and ever faster by pushing the limits of the human body, technology, and advancing modern science. But like all things, we are often faced with limits. And the helium escape valve was invented to push one of those limits as watchmaker Ashton Tracy explains.

How a Mechanical Watch Works with Simple to Understand Animations

In theory, a mechanical watch is very simple: it’s ‘simply’ a spring (the mainspring) unwinding at a constant rate with hands attached to gears that rotate as the spring unwinds. Easy! Ian Skellern highly recommends anyone at all interested in mechanical watches to watch this video as it clearly highlights how a mechanical watch works.

The Antikythera Mechanism: Predicting Astronomical Positions and Eclipses 2,000 Years Ago (Video)

The Antikythera mechanism is an Ancient Greek orrery over 2,000 years old. It is the oldest known example of an analog computer and was used to predict astronomical positions and eclipses decades in advance. Spencer Connor is an engineer who decided to make a modernized reproduction of the Antikythera mechanism. In this video, he explains just how special the intricate clockwork was for its day, and just how complex it is to track the obits of our moon and the planets around the sun.

Fitting Rolex balance wheel and Parachrom hairspring

Hairsprings: Origins, Progress, And (Dare I Say) Exciting Future – Reprise

The tiny, delicate, nearly impossible-to-create hairspring is the one of the biggest advances for modern scientific technology there is. Here Joshua Munchow takes a dive into the muscle of the beating heart of most mechanical watches: the hairspring.