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High-precision time piece
marked as Certified Chronometer or Officially Certified Chronometer. Outside Switzerland, equivalent bodies, such as the Japan Chronometer Inspection Institute
Chronometer_watch
Topics referred to by the same term
metronome Chronometer watch, a highly accurate watch Marine chronometer, a timekeeper used for marine navigation, as in Longitude by chronometer Observatory
Chronometer
Swiss watch manufacturer
21 marine chronometers for the US Navy, 1,500 for merchant shipping, and 500 for the US Army during the war. The Model 22 Chronometer Watch followed it
Hamilton_Watch_Company
Type of mechanical watch
the hack watch is synchronized with the ship's marine chronometer. The use of a hack watch makes it easier to take sights, as the chronometer is normally
Hack_watch
Personal timepiece
Coin watch Complication List of 24-hour watch brands List of most expensive watches sold at auction List of watch manufacturers Marine chronometer Movado
Watch
Clock used on ships to aid in navigation
A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation
Marine_chronometer
English clockmaker (1693–1776)
1776) was an English carpenter and clockmaker who invented the marine chronometer, a long-sought-after device for solving the problem of how to calculate
John_Harrison
Swiss watch manufacturer
(2019-06-17). "Top 20 Swiss Chronometer Watch Brands: Rolex Leads the Pack | Page 2 | WatchTime - USA's No.1 Watch Magazine". WatchTime. Retrieved 2019-06-21
Mido_(watch)
Instrument for measuring, keeping or indicating time
A clock or chronometer is a device that measures and displays time. The clock is one of the oldest human inventions, meeting the need to measure intervals
Clock
Swiss watchmaker founded by Hans Wilsdorf
Adams, Ariel (May 25, 2021). "Tudor Black Bay Ceramic Master Chronometer Watch". aBlogtoWatch. Retrieved May 26, 2021. "Explaining The History Of The NATO
Tudor_Watches
Artisan who makes and repairs watches
Gérald Genta Chronometer watch Clockmaker Complication Federation of the Swiss Watch Industry FH History of timekeeping devices Marine chronometer National
Watchmaker
An observatory chronometer is a timepiece that has passed stringent testing and a slate of accuracy tests. Thus, the "observatory trial" developed as
Observatory_chronometer
Swiss watchmaker
mechanical chronometers where its expertise lay (though it did have some experimentation in quartz), while Omega tried to compete in the quartz watch market
Omega_SA
Hilfiger Tourneau ToyWatch Tudor Tutima TW Steel Ulysse Nardin Universal Genève Urban Jürgensen Vacheron Constantin Vintan Vacuum Chronometer Corporation Valentino
List_of_watch_manufacturers
Core company of a Japanese global corporate group based in Tokyo, Japan
the X8 Chronometer, the world's first watch with a titanium case. In 1971, it released the Hi-Sonic, Japan's first tuning-fork electric watch, improving
Citizen_Watch
1974 quartz wristwatch
The Omega Marine Chronometer was the first quartz wristwatch ever to be awarded certified status as a marine chronometer. The watch was made by Omega SA
Omega_Marine_Chronometer
Clock type
quartz watches are chronometer-certified by the COSC. These COSC chronometer-certified movements can be used as marine chronometers to determine longitude
Quartz_clock
Swiss watch designer and manufacturer
other means to seal the case. In 1910, the first watchmaker to earn chronometer certification for a small lady wristwatch. In 1931, released a wristwatch
Rolex
by Pulsar. In 1974 the Omega Marine Chronometer was introduced, the first wrist watch to hold Marine Chronometer certification, and accurate to 12 seconds
History_of_watches
Swiss trade association
Chronometer watch Clockmaker Counterfeit watch "Our history". Federation of the Swiss Watch Industry. "Who are we ?". Federation of the Swiss Watch Industry
Federation of the Swiss Watch Industry
Federation_of_the_Swiss_Watch_Industry
Institute for testing Swiss watches
Contrôle officiel suisse des Chronomètres (COSC), the Official Swiss Chronometer Testing Institute, is the institute responsible for certifying the accuracy
COSC
American watchmaker
After the Civil War, the company became the main supplier of railroad chronometers to various railroads in North America and other countries. In 1876, the
Waltham_Watch_Company
British watch and clockmaking company
Dent is a British watch and clockmaking company founded by Edward John Dent in 1814. The firm became known for marine chronometers and standard clocks
Dent_(watchmaker)
Type of watch which uses a clockwork mechanism to measure the passage of time
when the watch is shaken horizontally. Chronograph Jewel bearing Quartz watch Railroad chronometers Skeleton watch Tourbillon Marine chronometer ETA SA
Mechanical_watch
German jewelry company
of its timepieces are chronometer certified by Wempe at their Sternwarte observatory facility in Glashutte. Wempe retails watch brands including Cartier
Wempe
Major American watch maker (1864–1968)
It moved into the defense industry, manufacturing military watches, chronometers, fuzes for artillery shells, altimeters, and other aircraft instruments
Elgin_National_Watch_Company
Chronometers were formerly used for the accurate determination of longitude by ships at sea. By measuring the time of local solar noon compared to the
List of chronometers on HMS Beagle
List_of_chronometers_on_HMS_Beagle
Watch made to be carried in a pocket
other high precision types of escapements (Hamiltons WWII era Model 21 chronometer used a fusee in combination with a detent escapement). Keywind watches
Pocket_watch
Ball has moon face on the dial very nice and big
"Why I Miss The COSC Chronometer Data". Hodinkee. "RailsWest.com Railroad Watches". railswest.com. Retrieved 3 June 2016. .BALL Watch collections Official
Ball_Watch_Company
1997 novel by Thomas Pynchon
Dixon reveals that before their departure from England he was given a chronometer watch by Emerson, the major feature of which is the perpetual motion of
Mason_&_Dixon
Timepiece used in operation of trains
A railroad chronometer or railroad standard watch is a specialized timepiece that once was crucial for safe and correct operation of trains in many countries
Railroad_chronometer
equipped with a jet-propelled scuba tank. Breitling 'Top Time' Diver Chronometer watch with built-in Geiger counter. Underwater camera capable of taking
List_of_James_Bond_gadgets
Artisan who makes and repairs clocks
Institute Federation of the Swiss Watch Industry FH Petrodvorets watch factory Worshipful Company of Clockmakers Chronometer watch Clockkeeper Horology List of
Clockmaker
British colonialist and missionary
recognised by the Royal Geographical Society which presented him a chronometer watch for 'his journey to the great lake of Ngami'. He heard of a river
David_Livingstone
18th and 19th-century British watchmaker
John Arnold's earlier work, further simplified the process of marine chronometer production, making them available to the general public. He is also known
Thomas_Earnshaw
Harrison built a succession of accurate timepieces, introducing the term chronometer. The electric clock, invented in 1840, was used to control the most accurate
History of timekeeping devices
History_of_timekeeping_devices
Continuous progression from past to future
Harrison. More recently, the term has also been applied to the chronometer watch, a watch that meets precision standards set by the Swiss agency COSC. In
Time
Process of monitoring and controlling the movement of a craft or vehicle
with a comparing watch, which is set to chronometer time and taken to the bridge wing for recording sight times. In practice, a wrist watch coordinated to
Navigation
England, was a highly respected and successful British master clock, watch and chronometer maker. He was a nonconformist who was married to Mary Bryers and
Joseph_Johnson_(watch_maker)
Swiss watch company
to COSC Chronometer certified. List of ETA Movements "Page fabricant". Invenit et fecit (in French). "Genuine Swiss Watch Brands". Swiss watch guy. Google
ETA_SA
Type of watch
chronograph is often confused with the term chronometer. Where "chronograph" refers to the function of a watch, chronometer is a measure of how well a given mechanical
Chronograph
Villeret. Founder of watch company Blancpain. John Harrison (1693–1776), English carpenter and autodidact watchmaker, London, chronometer Johann Jacob Möllinger
List_of_watchmakers
British watchmaker
revenue of £40 million. All of their watches are either COSC or ISO chronometer rated and built in the United Kingdom. Bremont was founded by brothers
Bremont
British chronometer company
Thomas Mercer Chronometers is a British company specialising in the design and production of bespoke chronometers. The story begins with John Harrison
Thomas_Mercer_Chronometers
Japanese manufacturing company
units. The watch was also the first chronometer-grade watch manufactured in Japan and was based on Seiko's own chronometer standard. Some Grand Seiko timepieces
Seiko
Swiss watch manufacturer
"He introduces us a robust Turki with blond beard whose 'West End Watch chronometer' features an inscription in which Aurel Stein expresses his thanks
West_End_Watch_Co.
Swiss luxury watchmaking company
Switzerland. The company became known for manufacturing highly accurate marine chronometers and complicated precision exclusive timepieces used by over 50 of the
Ulysse_Nardin
Brand of Russian wristwatches
first wristwatches under the brand name "Pobeda" and the first marine chronometers and hack watches or deck watches were produced. By 1951 the production
Poljot
Record of humanity's attempts to find east-west position on Earth
transported great distances by ship. John Harrison's invention of a chronometer that could keep time at sea with sufficient accuracy to be practical
History_of_longitude
German luxury watch brand
up/down power reserve indicator (patent No. 9349), improved chronometer restraints, pocket watch with minutes counter, and addition of beryllium to improve
A._Lange_&_Söhne
Swiss watch company
entry of newcomers into the watch industry in Switzerland for almost 40 years. The company was initially called Vacuum Chronometer Corp., which manufactured
Century_Time_Gems
British watchmaker (1719–1790)
time. Jeffreys created a pocket watch for John Harrison, who later used ideas from pocket watches in his H4 chronometer. Kendall set up his own business
Larcum_Kendall
Swiss manufacturer of mechanical watches
15 sec/day Chronometer – COSC-certified Chronometer, meaning it meets the strict accuracy standards set by the Official Swiss Chronometer Testing Institute
Sellita
Swiss luxury watch company
Pinochet's military dictatorship, recalled receiving a Universal Genève chronometer wristwatch as a young man and still wearing it at the present, according
Universal_Genève
Swiss watchmaker
1960s have 12 or 13 lined movements, the "qualité exceptionelle" in chronometer standards. Lanco pocket watches are also of very good quality, and some
Langendorf_Watch_Company_SA
Swiss watch company
Grand Prix d'Horlogerie de Genève, Journe focuses on complex precision chronometers with a production of around 800 watches per year. The company's motto
F._P._Journe
German watch manufacturer
Germany. In 1903, Junghans was the largest watch factory in the world and in 1956 it was the third largest chronometer manufacturer right behind Rolex and Omega
Junghans
Time measuring device
David (1885). Watch and Clock Making. London: Cassel & Co. Retrieved 2008-04-16. p. 227 Gould, Rupert T. (1923). The Marine Chronometer. Its History and
Balance_wheel
American restaurateur and abolitionist (1791–1866)
that she wrote Thomas a letter thanking him, and gifted him a gold chronometer watch, which became a Downing family heirloom. As Queen Victoria never travelled
Thomas_Downing_(restaurateur)
Wristwatch manufactured by Rolex
Datejust is a self-winding chronometer manufactured by Rolex. Launched in 1945, the Datejust was the first self-winding chronometer wristwatch to indicate
Rolex_Datejust
Watch designed for underwater diving
A diving watch, also commonly referred to as a diver's or dive watch, is a watch designed for underwater diving that features, as a minimum, a water resistance
Diving_watch
Chronograph wristwatch, worn by astronauts
Speedmaster Automatic MkIII and MkIV models alongside Speedsonic Electronic Chronometer Chronograph (marketing as a Speedmaster) other non-Speedmaster Chronographs
Omega_Speedmaster
American sidewheel sloop-of-war
of 2350 miles. Captain Long was presented with a heavy gold-cased chronometer watch by the U.S. Government as thanks for successfully undertaking the
USS_Saginaw_(1859)
1970s–80s watchmaking industry upheaval
Omega introduced the Omega Marine Chronometer, the first quartz watch ever to be certified as a marine chronometer, accurate to 12 seconds per year using
Quartz_crisis
Swiss luxury watchmaker
directorial board. The company's mechanical or quartz movements are chronometer certified by the COSC and are usually marketed towards either diving
Breitling_SA
American whaler
marine chronometer by Adams. The K2 was the third precision marine chronometer made after the H4, designed by John Harrison. The chronometer was taken
Mayhew_Folger
1803–1806 naval expedition
Krusenstern and astronomer Horner used a Chronometer watch. However, the ship's rolling changed chronometer data significantly, and later, in Japan, the
First Russian circumnavigation
First_Russian_circumnavigation
Swiss luxury watch and clock manufacturer
watch protected against magnetic fields, water and shocks. The Geophysic chronometer was proposed by long-time employee Jules-César Savary as a watch
Jaeger-LeCoultre
Navigation using astronomical objects to determine position
indeed, every four seconds of time source (commonly a chronometer or, in aircraft, an accurate "hack watch") error can lead to a positional error of one nautical
Celestial_navigation
Swiss manufacturer of mechanical watches
followed shortly by the Calibre 652 movement, which was awarded full chronometer certification, the highest distinction for accuracy, by the Observatoire
Oris
List of geography award winners
a Founder's Medal the council presented David Livingstone with a chronometer watch for 'his journey to the great lake of Ngami'. In 1851, the council
List of recipients of the Founder's Medal
List_of_recipients_of_the_Founder's_Medal
Swiss watchmaker
its Pilot watch family of products. They have produced a range of pilot watches in new sizes, together with COSC certificated chronometers. Zeno also
Zeno-Watch_Basel
Line of sports watches by Rolex
mainspring, allowing the watch to continue to function with no movement for several days. Each movement is a Swiss chronometer officially certified by
Rolex_Submariner
18th-century French clockmaker
Roy chronometer, 1766, Musée des Arts et Métiers Pierre Le Roy chronometer, 1766 Pierre Le Roy chronometer mechanism Plans of Le Roy chronometer He was
Pierre_Le_Roy
American restaurateur, abolitionist and activist (1819–1903)
oysters to Queen Victoria, in recognition of which she sent a gold chronometer watch to Thomas in the care of Commodore Joseph Comstock. The Downing family
George_T._Downing
Line of mechanical diving watches
character, James Bond wore an Omega Seamaster Professional Diver 300M Chronometer 2531.80.00. Before 1995, actors portraying James Bond wore a range of
Omega_Seamaster
Swiss luxury watchmaker
pocket watch featuring a depiction of the prize on the case.[citation needed] In the 1920s, Zenith developed the Calibre 26x series of chronometers based
Zenith_(watchmaker)
English watchmaker (1790-1853)
famous English watchmaker noted for his highly accurate clocks and marine chronometers. He founded the Dent company. Edward John Dent, son of John and Elizabeth
Edward_John_Dent
Type of escapement in mechanical watch movements
of the detent chronometer escapement with a temperature compensated balance, very close rates could be achieved in marine chronometers and to a lesser
Echappement_naturel
Clock or watch face showing the full 24 hours
that clock: it's electric, it runs with an accuracy rivaling the finest chronometers. I've had it divided into twenty–four hours like Italian clocks, since
24-hour_analog_dial
German watchmaker
wound chronometer movement cal. 630. On 1 February 1959, Ludwig Hummel sold the company to Timex Group USA. The company later developed electric watch technology
Laco_Uhrenmanufaktur
English horologist
continuously trading firm of chronometer manufacturers in the world. In January 2018, the firm launched a new chronometer wristwatch, after sixteen years
Charles_Frodsham
A Movado Ermeto watch was a pocket/purse watch manufactured between 1926 and 1985 by Movado in La Chaux-de-Fonds (Switzerland). The model, a joint creation
Movado_Ermeto_watch
Mechanism for regulating the speed of clocks
the Waterbury, a cheap American "everyman's watch", during 1880–1898. In the duplex, as in the chronometer escapement to which it has similarities, the
Escapement
British watch company
COSC chronometer certification. The release was described by industry observers as “probably the most important development by a British watch brand
Christopher_Ward_(watchmaker)
German watchmaker
9411), Teutonia II Chronograph, Teutonia II Kleine Sekunde, Teutonia II Chronometer, Teutonia II Quadrant Chronograph, Teutonia II Quadrant Medium, Teutonia
Mühle_Glashütte
English watchmaker and inventor
Arnold was the first to design a watch that was both practical and accurate, and also brought the term "chronometer" into use in its modern sense, meaning
John_Arnold_(watchmaker)
gift of a chronometer watch to Napoleon I in 1807. But it wasn't until 1867 that Emmanuel's grandson, Ernest Lipmann, opened a full-fledged watch production
History of clockmaking in Besançon
History_of_clockmaking_in_Besançon
Science of the measurement of time
clockwork, sundials, hourglasses, clepsydras, timers, time recorders, marine chronometers, and atomic clocks are all examples of instruments used to measure time
Chronometry
English watch company
become principally a watch maker and, in the early 20th century, supplied chronometers and deck watches to the Royal Navy. Since the 1950s it has concentrated
Le_Cheminant
French luxury goods conglomerate
– Creation of the Love bracelet. 1969 – First inclusion of a Cartier Chronometer in a Luxury Car 1971 – Creation of the Juste un Clou bracelet at Cartier
Cartier_(jeweler)
Swiss watch manufacturer
accomplishments of the Manufacture generally, and specifically for the Observatory Chronometer wristwatch that used the Gyromatic HF movement. 1970: Girard-Perregaux
Girard-Perregaux
COSC certified, self-winding chronometer manufactured by Rolex
COSC certified, self-winding chronometer manufactured by Rolex. Initially presented in 1956, the Day-Date was the first watch to display the date as well
Rolex_Day-Date
British architect
several family heirlooms, including his great grandfather's gold chronometer watch, his family bible, a 1584 Bishop's Bible, "leather-bound in oak boards"
William_Eves
Hong Kong watch company founded in Switzerland
company). Ditisheim was instrumental in developing the new generation of chronometers, improving them through his studies on the impact of atmospheric pressure
Solvil_et_Titus
Watch manufacturer in Pforzheim, Baden-Württemberg, Germany
designs. Marine: Based on the marine chronometers used in navigation. Partitio: a Bauhaus design inspired watch, replicated from a 1930s STOWA design
Stowa
Addition to the mechanics of a watch escapement
Museum in Rockford, Illinois, US, and was included in their Catalogue of Chronometers. A characteristic of this tourbillon is that it turns around two axes
Tourbillon
World's first digital/analogue chronograph
first Swiss production watch and the Omega Marine Chronometer as the first wristwatch to gain certification as a Marine Chronometer (and was accurate to
Omega_Chrono-Quartz
Watch resistant to magnetic fluctuations
that the watch was as accurate after its magnetic exposure as it had been before. The Rolex Milgauss series of antimagnetic certified chronometers was first
Antimagnetic_watch
Swiss luxury watches manufacturer
Alarm GMT Certified Chronometer) 2020: Top Magazin Uhrenwahl: Luxury Class (Fortis Aeromaster Steel Alarm Chronograph) 2025: Watch Design of the Year Award:
Fortis_Watches
CHRONOMETER WATCH
CHRONOMETER WATCH
Surname or Lastname
English
English : occupational name for someone who had to watch or look after something (see Luker).
Girl/Female
Hindu
Name of a flower, One who watches over
Girl/Female
Tamil
Rakshana | ரகà¯à®·à®¾à®¨à®¾Â
The act of protecting, Watching over
Rakshana | ரகà¯à®·à®¾à®¨à®¾Â
Girl/Female
Tamil
Watchful, Vigilant
Surname or Lastname
English
English : from a personal name that was popular throughout Christendom in the Middle Ages. The Greek original, Grēgorios, is a derivative of grēgorein ‘to be awake’, ‘to be watchful’. However, the Latin form, Gregorius, came to be associated by folk etymology with grex, gregis, ‘flock’, ‘herd’, under the influence of the Christian image of the good shepherd. The Greek name was borne in the early Christian centuries by two fathers of the Orthodox Church, St. Gregory Nazianzene (c. 325–390) and St. Gregory of Nyssa (c. 331–395), and later by sixteen popes, starting with Gregory the Great (c. 540–604). It was also the name of 3rd- and 4th-century apostles of Armenia. In North America the English form of the name has absorbed many cognates from other European languages. (For forms, see Hanks and Hodges 1988).
Girl/Female
Tamil
Name of a flower, One who watches over
Boy/Male
Muslim
Most watchful
Boy/Male
Indian
The watchful
Boy/Male
Muslim
Observer, Guard the watcher
Girl/Female
Tamil
Jaagravi | ஜாகà¯à®°à®¾à®µà¯€
Alert, Awake, Watchful, King
Jaagravi | ஜாகà¯à®°à®¾à®µà¯€
Surname or Lastname
English
English : occupational name for a watchman, from Old French garde ‘watch’, ‘protection’, a word of Germanic origin. Compare Ward 1.
Surname or Lastname
German and Jewish (Ashkenazic)
German and Jewish (Ashkenazic) : metonymic occupational name for a cutler, from Middle High German mezzer ‘knife’, from Old High German mezzirahs, mezzisahs, a compound of maz ‘food’, ‘meat’ + sahs ‘knife’, ‘sword’. The Jewish name is from German Messer ‘knife’ or Yiddish meser.German : occupational name for an official in charge of measuring the dues paid in kind by tenants, from an agent derivative of Middle High German mezzen ‘to measure’.English and Scottish : occupational name for someone who kept watch over harvested crops, Middle English, Older Scots mess(i)er, from Old French messier (see Messier).
Girl/Female
Tamil
Name of a flower, One who watches over
Boy/Male
Indian
The watchful
Surname or Lastname
English
English : habitational name from any of several places in Merseyside, Norfolk, Northamptonshire, and Staffordshire called Gayton, or from Gayton le Marsh or Gayton le Wold in Lincolnshire. The Northamptonshire and Staffordshire place names are from an Old English personal name Gǣga + tūn ‘farmstead’; the others are from Old Norse geit ‘goat’ + tún ‘farmstead’.French : diminutive of Gayte, a southern variant of guette ‘watch’, and hence an occupational name for a watchman.
Surname or Lastname
English
English : occupational name for a watchman, from Middle English, Old French gaite ‘watchman’.
Girl/Female
Hindu
Name of a flower, One who watches over
Surname or Lastname
English
English : habitational name from Lucker in Northumberland, probably named from Old English luh ‘pool’ + Old Norse kjarr ‘marsh’.English : occupational name for someone who had to watch or look after something, typically a watchman or a keeper of animals, Middle English lokere (a derivative of Middle English loke(n), luke(n) ‘to look’, Old English lÅcian).
Surname or Lastname
English
English : occupational name or nickname from a noun derivative of Middle English kiken ‘to watch’, ‘to spy’.
Surname or Lastname
English (Somerset and Wiltshire)
English (Somerset and Wiltshire) : possibly a derivative of Middle English kiken ‘to watch’, ‘to spy’. Compare Kicker.German : variant of Keck.Dutch : probably a nickname, from a derivative of kikken ‘to kick’.
CHRONOMETER WATCH
CHRONOMETER WATCH
Boy/Male
American, Anglo, Australian, British, English
Sea Lover; Boar Friend
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
God of Darkness; Moon
Boy/Male
Indian
A narrator of Hadith
Girl/Female
Assamese, Gujarati, Hindu, Indian, Oriya, Sindhi
Lovable; Intellectual Girl; Lovely; The Favourite One; Part of Beloved
Girl/Female
Indian, Punjabi, Sikh
Speaking
Boy/Male
Biblical
Drunkenness; his gift; his wages.
Boy/Male
Arabic, Muslim
Treasure
Male
Hebrew
(חִירָה) Hebrew name CHIYRAH means "a noble race; nobility." In the bible, this is the name of a friend of Judah.
Girl/Female
Indian, Punjabi, Sikh
Insignia
Boy/Male
Arabic
Helper; Succour
CHRONOMETER WATCH
CHRONOMETER WATCH
CHRONOMETER WATCH
CHRONOMETER WATCH
CHRONOMETER WATCH
n.
One set to watch; a person who keeps guard; a guard; a sentinel.
n.
A metronome.
a.
Pertaining to a chronometer; measured by a chronometer.
n.
An instrument to test the decoloring or bleaching power of chloride of lime.
n.
An allowance made for inaccuracy in an instrument; as, chronometer correction; compass correction.
n.
A clock, watch, or other chronometer; a timepiece.
n.
A portable timekeeper, with a heavy compensation balance, and usually beating half seconds; -- intended to keep time with great accuracy for use an astronomical observations, in determining longitude, etc.
n.
A word given to sentinels, and to such as have occasion to visit the guards, used as a signal by which a friend is known from an enemy, or a person who has a right to pass the watch from one who has not; a countersign; a password.
n.
An instrument for measuring time; a timekeeper.
n.
The art of measuring time; the measuring of time by periods or divisions.
n.
A clock, watch, or other instrument, to measure or show the progress of time; a chronometer.
n.
A tower in which a sentinel is placed to watch for enemies, the approach of danger, or the like.
n.
A contrivance for permitting a body to incline freely in all directions, or for suspending anything, as a barometer, ship's compass, chronometer, etc., so that it will remain plumb, or level, when its support is tipped, as by the rolling of a ship. It consists of a ring in which the body can turn on an axis through a diameter of the ring, while the ring itself is so pivoted to its support that it can turn about a diameter at right angles to the first.
n.
An instrument for detecting and measuring the amount of carbon which is present, or more esp. the amount of carbon dioxide, by its action on limewater or by other means.
n.
An instrument for measuring sounds, as to their intensity, or the frequency of the vibrations.
v. i.
A small timepiece, or chronometer, to be carried about the person, the machinery of which is moved by a spring.
n.
An instrument for measuring the bleaching power of chloride of lime and potash; a chlorometer.