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Results for Equation of Time

34,165 articles · 142 videos found · page 23 of 1144

The Greatest Horological Masterpieces of All Time: the Harrison H4 – A Groundbreaking Timepiece That Solved The Longitude Problem Worn & Wound
Oct 27, 2025

The Greatest Horological Masterpieces of All Time: the Harrison H4 – A Groundbreaking Timepiece That Solved The Longitude Problem

A series of features identifying the most extraordinary mechanical masterpieces in history, blending precision, innovation, and craftsmanship. We all have our favourite timepieces either in our collection or those incredible horological masterpieces that have been invented or created through the ages. This series will showcase examples from the previous centuries up to the present day and look at the importance and impact on modern day timekeeping.  John Harrison’s H4 Chronometer was a groundbreaking timepiece that solved the longitude problem, a major challenge for navigation during the 18th century. Before Harrison’s work, sailors had no reliable way to determine their precise east-west position at sea, leading to deadly navigation errors. The British government, through the Longitude Act of 1714, offered a large prize to anyone who could develop a practical solution. Sir Cloudesley Shovell, by Michael Dahl, about 1702-5 (L); The Association with the Eagle, Rumney and the Firebrand, Lost on the Rocks of Scilly, October 22, 1707 (R). Image courtesy of the © National Maritime Museum, Greenwich, London The Catalyst for the Longitude Act In the early 18th century, determining longitude at sea was one of the greatest challenges in navigation. While sailors could measure latitude using the position of the sun or stars, longitude required precise timekeeping-something that was nearly impossible with the unreliable clocks of the time. The inability to determ...

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The Greatest Collectors of All Time: James Ward Packard – American Industrialist And Highly Competitive Discerning Collector Worn & Wound
Sep 30, 2025

The Greatest Collectors of All Time: James Ward Packard – American Industrialist And Highly Competitive Discerning Collector

James Ward Packard (1863–1928) was a prominent American industrialist, inventor, and watch collector. Best known as the founder of the Packard Motor Car Company, which manufactured some of the most luxurious automobiles of the early 20th century, Packard was also an avid horology enthusiast and one of the most influential watch collectors of his era. His rivalry with Henry Graves Jr. over acquiring the most complicated and exquisite timepieces played a pivotal role in advancing the art of watchmaking. James Ward Packard was an engineer both in and out of the classroom. He wired the door and alarm clock of his dormitory room with switching mechanisms and rigged telegraph lines to friends’ rooms. Five years after graduating, he applied for the first of over forty patents. Upon graduation he and his brother started manufacturing incandescent carbon arc lamps. In 1890, Packard opened the Packard Electric Company with his brother in their hometown of Warren, Ohio. Packard and his first business partner, George Lewis Weiss, initially purchased a Winton automobile in 1898. After experiencing multiple issues with it, Packard personally suggested improvements to Alexander Winton. When Winton dismissed him, Packard decided to build a better car himself, leading to the creation of the first Packard automobile. Their company, the Packard Electric Company, made automotive electric systems. It was purchased by General Motors in 1932. The Packard Automobile Company was purchased by S...

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Introducing – Vacheron Constantin Unveils “The Quest of Time” Astronomical Clock and Watch for 270th Anniversary Monochrome
Vacheron Constantin Unveils “The Quest Sep 16, 2025

Introducing – Vacheron Constantin Unveils “The Quest of Time” Astronomical Clock and Watch for 270th Anniversary

Few watchmaking houses can look back on a history spanning 270 years. Marking such an extraordinary milestone requires more than a timepiece; it calls for a creation that embodies heritage, creativity, and mastery. In the frame of its 270th anniversary celebrations, Vacheron Constantin presents an exceptional object – not a watch per se, but a […]

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The Greatest Collectors of All Time: Henry Graves Jr. – The Banker Who Commissioned Complex and Innovative Watches Worn & Wound
Patek Philippe Henry Graves Supercomplication considered Sep 2, 2025

The Greatest Collectors of All Time: Henry Graves Jr. – The Banker Who Commissioned Complex and Innovative Watches

Henry Graves Jr. (1868–1953) was a prominent American banker and art collector, most famous for his passion for collecting timepieces. He is best known for commissioning some of the most complex and innovative watches ever made, including the Patek Philippe Henry Graves Supercomplication, considered one of the most significant and expensive timepieces in horological history. Graves was born on the 11th of March 1868 in Orange, New Jersey, in the United States of America. The Graves family was a prominent and wealthy banking family. His father, Henry Graves Sr. (1838–1906), was a co-founder and partner in the Maxwell & Graves banking firm. They engaged in the railroad and financial services industries and Henry Graves, Jr. continued the family legacy of financial services expertise as an investment banker. The company operates today under the name M&G; Solutions which was founded by the great-great-grandson of Henry Graves Jr. They use an image of the Patek Philippe Henry Graves Supercomplication in their logo signifying the ‘&’ symbol paying tribute to his relative’s interest in watches (below). Graves was known primarily for his legendary watch collection which stemmed from his status as a wealthy financier who appreciated fine craftsmanship and luxury items. He was also an avid collector of art, reflecting his refined taste, acquiring items of significant cultural and historical value.  Henry Graves Jr.’s interest in watches stemmed from his status as a weal...

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The Greatest Collectors of All Time: David Arthur Wetherfield – A Very Prominent and Significant English Collector Worn & Wound
Jul 29, 2025

The Greatest Collectors of All Time: David Arthur Wetherfield – A Very Prominent and Significant English Collector

David Arthur Wetherfield (1845-1928) was a prominent collector of English domestic clocks, amassing one of the most significant private collections of its kind. His collection, known as the Wetherfield Collection, particularly from the ‘Golden Age’ of English clockmaking (late 17th to early 18th century), consisted of over 220 clocks, including longcase clocks, bracket clocks, and lantern clocks. The collection was particularly notable for its focus on English craftsmanship, featuring works by master clockmakers such as Edward East, Daniel Quare, Joseph Knibb, George Graham and Thomas Tompion (known as the ‘Father of English Clockmaking’). David Wetherfield lived in Blackheath, Southeast London, and for many years, was the senior partner of the coal exporters and marine insurance brokers W.S. Partridge and Co. The firm went out of business when he retired at an advanced age. His interest in clocks was said to have started when he wanted to own a longcase (grandfather) clock, employing an ‘expert’ to advise him on which one he should buy. Apparently, he was deceived into buying a worthless imitation and when he realised this, decided to put together a collection of timepieces that would be unsurpassed by anyone else. His entire collection was housed at his home in Blackheath and remained there until his death, aged 83 in 1928. According to one visitor, the house was three or four storeys high with a basement, where grandfather clocks stood on every other stair ...

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The Greatest Collectors of All Time: Sir David Lionel Salomons – A Renowned Collector Of Breguet Watches Worn & Wound
Breguet Watches Sir David Lionel Jul 1, 2025

The Greatest Collectors of All Time: Sir David Lionel Salomons – A Renowned Collector Of Breguet Watches

Sir David Lionel Salomons (1851–1925), the nephew of the original Sir David Salomons (1797–1873), was a renowned collector of Breguet watches and a significant figure in the world of horology. His passion for precision engineering, combined with his wealth and scholarly interest, made him one of the most prominent collectors of Abraham-Louis Breguet’s masterpieces. The Salomons were a highly respected family in 18th century London society. The family had arrived and settled in Bury St in the City of London from the Netherlands in the early 18th century, attracted by the financial opportunities in the developing British economy. They chose this part of the city because it was both a centre of the finance industry and had an established Jewish community.  David Lionel’s Uncle was elected as the Lord Mayor of London in 1855 (below). He was the first Jewish Lord Mayor of London, and known for fighting the Jewish cause in Parliament, but he was also a pioneer of joint stock banking and held prominent positions in other fields. Sir David Salomons (1797–1873), Lord Mayor of London (1855). Solomon Alexander Hart (1806–1881). Guildhall Art Gallery. Image courtesy of City of London Corporation Early Life David Lionel Salomons, was born in Brighton. He was educated for a short period at University College, London, and afterwards at Caius College, Cambridge, where he graduated with natural science honours in 1874.  He was a member of the Institution of Electrical Engi...

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First Look – The Return of Urban Jürgensen, and the New UJ-1 Tourbillon, UJ-2 Time-Only and UJ-3 Perpetual Monochrome
Urban Jürgensen Jun 5, 2025

First Look – The Return of Urban Jürgensen, and the New UJ-1 Tourbillon, UJ-2 Time-Only and UJ-3 Perpetual

A couple of days ago, we published a long, in-depth article on the history of one of the most important watchmaking dynasties, Urban Jürgensen. There were more reasons for this article than just celebrating this historic name, which was founded in 1773. This article was here to prepare the grounds for what is happening today, […]

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Introducing the Swatch SCUBAQUA Collection, a Series of Colorful Divers, Just in Time for Summer Worn & Wound
Swatch May 9, 2025

Introducing the Swatch SCUBAQUA Collection, a Series of Colorful Divers, Just in Time for Summer

If there’s one drum I’m constantly banging in the watch enthusiast discourse, it’s that the Swatch MoonSwatch is probably among the least interesting watches made by the brand. I know, I know. They are a phenomenon. They have probably introduced untold numbers of new collectors to our hobby. And they are meant to be fun and I should just chill out. This is all incredibly valid. But as a somewhat older, somewhat more grizzled watch collector who fondly remembers a pre-MoonSwatch era, I’m very much of the opinion that Swatch remains on the vanguard of creativity, you just have to walk past that MoonSwatch display briefcase in the boutique.  This week saw the release of what I think is a great example of a watch that is more impressive in just about every way than a run of the mill MoonSwatch. The new SCUBAQUA Collection even uses the same Bioceramic material found in the MoonSwatch, but in a way that, to my eye, is more uniquely Swatch. Based on the classic Swatch Scuba collection, the new SCUBAQUA watches are a thoughtful update using new materials with enhanced specs and a more contemporary feel.  The new SCUBAQUA watches are all about color and transparency, achieving what the brand calls the “jelly effect,” a principle common to many similarly transparent and colorful Swatches over the years. Each watch combines Bioceramic in the solid color sections of the case with castor oil derived biosourced materials for the transparent components. The dials in each v...

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