Pocket watch

pocketwatchfob watchwatch fobwatch chainpocketwatchesfob or Pocket watchhalf-hunter watchhunterhunter case
A pocket watch (or pocketwatch) is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist.wikipedia
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Watch

wristwatchwatchesdigital watch
A pocket watch (or pocketwatch) is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist.
A pocket watch is designed for a person to carry in a pocket.

Waistcoat

vestwaistcoatsM.B waistcoat
Pocket watches generally have an attached chain to allow them to be secured to a waistcoat, lapel, or belt loop, and to prevent them from being dropped.
Before wristwatches became popular, gentlemen kept their pocket watches in the front waistcoat pocket, with the watch on a watch chain threaded through a buttonhole.

Trench watch

They were the most common type of watch from their development in the 16th century until wristwatches became popular after World War I during which a transitional design, trench watches, were used by the military.
It was a transitional design between pocket watches and wristwatches, incorporating features of both.

Cigar cutter watch fob

cigar cutter
Ostensibly practical gadgets such as a watch winding key, vesta case, or a cigar cutter also appeared on watch chains, although usually in an overly decorated style.
A cigar cutter watch fob is a decorative and utilitarian pendant that is attached to the opposite side of a chain as a pocket watch.

Pocket

pocketspatch pocketpatch pockets
A pocket watch (or pocketwatch) is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist.
A watch pocket or fob pocket is a small pocket designed to hold a pocket watch, sometimes found in men's trousers and waistcoats and in traditional blue jeans.

Verge escapement

verge and foliotfoliotcrown wheel and verge escapement
Up to the 1720s, almost all watch movements were based on the verge escapement, which had been developed for large public clocks in the 14th century.
Verge escapements were used from the 14th century until the mid 19th century in clocks and pocketwatches.

Peter Henlein

Peter Henlein, a master locksmith of Nuremberg, was regularly manufacturing pocket watches by 1524.
These were sometimes worn as pendants or attached to clothing, and so may be considered the first watches, although at over 3 inches long they were bigger than the first true pocketwatches which appeared about a century later, and were not able to fit in pockets.

Movement (clockwork)

movementmovementswatch movement
Up to the 1720s, almost all watch movements were based on the verge escapement, which had been developed for large public clocks in the 14th century.
When buying a quality pocketwatch from the mid-19th to the mid-20th century, for example, the customer would select movement and case individually.

World War I

First World WarGreat WarFirst
They were the most common type of watch from their development in the 16th century until wristwatches became popular after World War I during which a transitional design, trench watches, were used by the military.
The war contributed to the evolution of the wristwatch from women's jewellery to a practical everyday item, replacing the pocketwatch, which requires a free hand to operate.

Nuremberg

NürnbergNuremberg, GermanyCity of Nuremberg
Peter Henlein, a master locksmith of Nuremberg, was regularly manufacturing pocket watches by 1524.
Pocket watches — Nuremberg eggs — were made here in the 16th century by Peter Henlein.

Thomas Mudge (horologist)

Thomas MudgeMudgeThomas
Then, towards the end of the 18th century, the lever escapement (invented by Thomas Mudge in 1755) was put into limited production by a handful of makers including Josiah Emery (a Swiss based in London) and Abraham-Louis Breguet.
Thomas Mudge (1715 – 14 November 1794, London) was an English horologist who invented the lever escapement, the greatest single improvement ever applied to pocket watches.

Kipton, Ohio

Kipton
A famous train wreck on the Lake Shore and Michigan Southern Railway in Kipton, Ohio on April 19, 1891 occurred because one of the engineers' watches had stopped for four minutes.
Kipton was the site of a famous train wreck on April 18, 1891, which was caused by railroad engineers' watches not being in sync; and led to the adoption of stringent quality-control standards for railroad chronometers in 1893.

Patek Philippe SA

Patek PhilippePatek Philippe & CoPatek Philippe with a Sky Moon Tourbillion
Invented by Adrien Philippe in 1842 and commercialized by Patek Philippe & Co. in the 1850s, the stem-wind, stem-set movement did away with the watch key which was a necessity for the operation of any pocket watch up to that point.
Along with his fellow Czech-born Polish partner Franciszek Czapek, Polish watchmaker Antoni Patek formed Patek, Czapek & Cie on May 1, 1839 in Geneva and started making pocket watches.

Henry Pitkin

The first American pocket watches with machine made parts were manufactured by Henry Pitkin with his brother in the later 1830s.
Pitkin was the inventor of the American lever watch movement for pocket watches.

Patek Philippe Henry Graves Supercomplication

the most complicated watch ever made
Patek Philippe Henry Graves Supercomplication (1933) — 24 complications
The Patek Philippe Henry Graves Supercomplication is one of the most complicated mechanical pocket watches ever created.

Patek Philippe Calibre 89

Patek Philippe Calibre 89 (1989) — 33 complications
The Patek Philippe Calibre 89 is a commemorative pocket watch created in 1989, to celebrate the company's 150th anniversary.

Reference 57260

The Vacheron Constantin Reference 57260 (2015) — 57 complications
The Vacheron Constantin Reference 57260 is a single highly complicated mechanical pocket watch, featuring 57 complications.

List of most expensive watches sold at auction

most expensive watch ever sold at auctionmost expensive watches ever sold at auctionmost expensive watches ever sold at auctions
List of most expensive watches sold at auction
As of December 2018, the most expensive watch/pocket watch ever sold at auction is the Patek Philippe Henry Graves Supercomplication, reaching a final price of 23.98 million US dollars (23,237,000 CHF) in Geneva on November 11th, 2014.

Jean-Antoine Lépine

Lépine
An open-faced, or Lépine, watch, is one in which the case lacks a metal cover to protect the crystal.
Around 1764/65, he devised a means of manufacturing a pocket watch that could be thinner, favouring the onward quest for further miniaturization.

Balance spring

hairspringisochronousbalance spring or "hair spring
Positional adjustments are attained by careful poising (ensuring even weight distribution) of the balance-hairspring system as well as careful control of the shape and polish on the balance pivots.
The addition of the balance spring to the balance wheel around 1657 by Robert Hooke and Christiaan Huygens greatly increased the accuracy of portable timepieces, transforming early pocketwatches from expensive novelties to useful timekeepers.

Suit (clothing)

suitmenswearsuits
For a few years in the late 1970s and 1980s three-piece suits for men returned to fashion, and this led to small resurgence in pocket watches, as some men actually used the vest pocket for its original purpose.
A pocket watch on a chain, one end of which is inserted through a middle buttonhole, is often worn with a waistcoat; otherwise, since World War I when they came to prominence of military necessity, men have worn wristwatches, which may be worn with any suit except the full evening dress (white tie).

Railroad chronometer

railroad chronometerschronometerrailroad watch
The railroad officials commissioned Webb C. Ball as their Chief Time Inspector, in order to establish precision standards and a reliable timepiece inspection system for Railroad chronometers.
Pocket watch

Fusee (horology)

fuseefuseeschain and fusee
Many keywind watch movements make use of a fusee, to improve isochronism.
In pocketwatches, the verge escapement, which required a fusee, was gradually replaced by escapements which were less sensitive to changes in mainspring force; the cylinder and later the lever escapement.

Wrist

radiocarpal jointwrist jointwrists
A pocket watch (or pocketwatch) is a watch that is made to be carried in a pocket, as opposed to a wristwatch, which is strapped to the wrist.

Chain

chainslink chainsteel chain
Pocket watches generally have an attached chain to allow them to be secured to a waistcoat, lapel, or belt loop, and to prevent them from being dropped.