A

ARABIC NUMBERS

0,1,2,3,4,5,6, ETC

ANALOGUE

Time indication by hands and dial.

ANTIMAGNETIC WATCH

Watch whose parts are protected from all but very strongest magnetism.

ANNUAL CALENDAR

Calendar mechanism that automatically adjust for short and long months, but does not correct for leap years.

APPLIED NUMERALS

Raised metal characters attached to the dial.

AUTOMATIC WATCH

Mechanical watch with a mainspring that is wound by the wearer’s movements.

AUXILLIARY DIALS

Also known as sub-dials, small inner dials found on the main dial.

B

BATON NUMERALS

Non-numerical markers of hours, minutes and seconds.

BEZEL

Round metal or ceramic frame in which the watch glass is fitted.

C

CABOCHON CROWN

A crown that is set with a jewel.

CALIBRE NUMBER

Reference to the type of movement

CARAT

The official scale by which the purity of gold is measured.

CASE

The housing for the movement, dial, clasp made from either metal or ceramic.

CHRONOGRAPH

A watch with timing functions to determine the duration of an event displayed in sub-dials on the face.

CHRONOMETER

A watch that has passed extremely strict precision and reliability tests in an official laboratory and has met standards set down by the Swiss Official Chronometer Testing Institute (COSC).

CLASP

The latching mechanism that closes to secure the watchband to the wrist.

CROWN

Knob positioned outside the case for winding, correcting and setting.

CRYSTAL

The glass dial cover can be made of plastic, mineral glass or synthetic sapphire crystal.

D

DATE WINDOW

A window on the watch face that displays the day of the month and sometimes the day of the week.

DEPLOYMENT BUCKLE

Two strips of hinged metal on the watch band. When closed the one folds over the other.

DIAL

Face of the watch showing hours, minutes and seconds.

DUAL TIME

The ability for a watch to be able to display two time zones simultaneously


F

FACE

Refers to the area within the watch bezel, usually underneath the hands.

G

GMT

Greenwich Meridian Time, a standard time that can be used internationally to reduce possible confusion between time zones

GOLD PLATING

A layer of gold applied to a base metal by chemical process.


H

HUMIDITY RESISTANCE

Describes the cases, which are designed to stop humidity entering.

I

INTEGRAL BRACELET

Designed as a natural extension of the watchcase.

J

JEWELS

Used as bearings at points of greatest friction in movements.

L

LAP TIME

Allows the user to view individual times for a series of intervals – for example the timing of each lap run.

LCD

Liquid crystal display.

LED

Light emitting diodes. A system for displaying time with digits.

LUG

The part of the watchcase to which the strap or bracelet may be attached.

M

MARKERS

Visual marks on the watch that indicate minutes or hours. Often these are illuminated.

MAINSPRING

Principle spring in the watch that delivers the energy to drive an mechanical movement – a flat spring is coiled in a barrel.

MODE

A selected function – for example alarm, chronograph.

MONTH APERTURE

The pierced window displaying the month.

MOVEMENT

The complete mechanism of the watch – from 120 to over 600 parts may be incorporated in it.

N

NIGHT MODE

A function on a digital watch which when activated will cause a light to illuminate the dial.


P

PERPETUAL

A self-winding automatic watch.

PERPETUAL CALENDAR

A calendar mechanism with display which automatically corrects for long and short months and leap years.

PLATINUM

A precious white-silver coloured metal that is heavier and more expensive than gold.

PUSH BUTTON

Pressed to set the chronograph or alarm, etc.

POWER CELL

Another term for a watch battery.

PVD

Physical Vapour Deposition – a metallic surface treatment.

Q

QUARTZ

A rock crystal that can be made to oscillate by electronic switching.

R

RHODIUM

A hard metal used as a protective coating for cases.

ROMAN NUMERALS

I,II,III, V etc, numerals used as markings on the dial.

ROTOR

In automatic watches, the rotor winds the mainspring. In quartz watches it is a permanently rotating magnet.


S

SAPPHIRE CRYSTAL

A glass that is made of synthetic sapphire.

SECOND HAND

This is the thinnest hand anchored in the centre of the face. On quartz watches this moves every second. On an automatic this hand moves smoothly, sweeping by each marker in second increments.

SHOCK-RESISTANT

A watch is classified as shock resistant if it can withstand being dropped onto a hard surface from a height of 1 metre.

SKELETON WATCH

A watch whose interior mechanism and movement are visible.

SPLIT TIME

A function that allows the user to view one time while continuing to record a second time.

STEM

The shaft connection between the winding mechanism and the crown.

SUBSIDARY DIALS

Smaller auxiliary dials showing elapsed minutes and running seconds.

“SWISS MADE”

This can only feature on a watch if at least 50% of the components are of Swiss manufacture b) if it was assembled in Switzerland c) it was started up and regulated by its manufacturer in Switzerland and d) the brand/style is continuously subject to technical inspection in Switzerland.

T

TACHYMETER

A function of a watch chronograph similar to a stop watch feature that can measure the rate of speed travelled over a measured distance in a particular length of time.

W

WATER RESISTANT

Watches designed to withstand a designated water pressure depth.

WORLD TIME WATCH

A watch that can depict the current time in any city or zone.

WATCH WINDER

A machine designed to keep automatic watches running when they are not being worn on a wrist. The machine is powered by either battery or electricity.

A

ARABIC NUMBERS

0,1,2,3,4,5,6, ETC

ANALOGUE

Time indication by hands and dial.

ANTIMAGNETIC WATCH

Watch whose parts are protected from all but very strongest magnetism.

ANNUAL CALENDAR

Calendar mechanism that automatically adjust for short and long months, but does not correct for leap years.

APPLIED NUMERALS

Raised metal characters attached to the dial.

AUTOMATIC WATCH

Mechanical watch with a mainspring that is wound by the wearer’s movements.

AUXILLIARY DIALS

Also known as sub-dials, small inner dials found on the main dial.

B

BATON NUMERALS

Non-numerical markers of hours, minutes and seconds.

BEZEL

Round metal or ceramic frame in which the watch glass is fitted.

C

CABOCHON CROWN

A crown that is set with a jewel.

CALIBRE NUMBER

Reference to the type of movement

CARAT

The official scale by which the purity of gold is measured.

CASE

The housing for the movement, dial, clasp made from either metal or ceramic.

CHRONOGRAPH

A watch with timing functions to determine the duration of an event displayed in sub-dials on the face.

CHRONOMETER

A watch that has passed extremely strict precision and reliability tests in an official laboratory and has met standards set down by the Swiss Official Chronometer Testing Institute (COSC).

CLASP

The latching mechanism that closes to secure the watchband to the wrist.

CROWN

Knob positioned outside the case for winding, correcting and setting.

CRYSTAL

The glass dial cover can be made of plastic, mineral glass or synthetic sapphire crystal.

D

DATE WINDOW

A window on the watch face that displays the day of the month and sometimes the day of the week.

DEPLOYMENT BUCKLE

Two strips of hinged metal on the watch band. When closed the one folds over the other.

DIAL

Face of the watch showing hours, minutes and seconds.

DUAL TIME

The ability for a watch to be able to display two time zones simultaneously


F

FACE

Refers to the area within the watch bezel, usually underneath the hands.

G

GMT

Greenwich Meridian Time, a standard time that can be used internationally to reduce possible confusion between time zones

GOLD PLATING

A layer of gold applied to a base metal by chemical process.


H

HUMIDITY RESISTANCE

Describes the cases, which are designed to stop humidity entering.

I

INTEGRAL BRACELET

Designed as a natural extension of the watchcase.

J

JEWELS

Used as bearings at points of greatest friction in movements.

L

LAP TIME

Allows the user to view individual times for a series of intervals – for example the timing of each lap run.

LCD

Liquid crystal display.

LED

Light emitting diodes. A system for displaying time with digits.

LUG

The part of the watchcase to which the strap or bracelet may be attached.

M

MARKERS

Visual marks on the watch that indicate minutes or hours. Often these are illuminated.

MAINSPRING

Principle spring in the watch that delivers the energy to drive an mechanical movement – a flat spring is coiled in a barrel.

MODE

A selected function – for example alarm, chronograph.

MONTH APERTURE

The pierced window displaying the month.

MOVEMENT

The complete mechanism of the watch – from 120 to over 600 parts may be incorporated in it.

N

NIGHT MODE

A function on a digital watch which when activated will cause a light to illuminate the dial.


P

PERPETUAL

A self-winding automatic watch.

PERPETUAL CALENDAR

A calendar mechanism with display which automatically corrects for long and short months and leap years.

PLATINUM

A precious white-silver coloured metal that is heavier and more expensive than gold.

PUSH BUTTON

Pressed to set the chronograph or alarm, etc.

POWER CELL

Another term for a watch battery.

PVD

Physical Vapour Deposition – a metallic surface treatment.

Q

QUARTZ

A rock crystal that can be made to oscillate by electronic switching.

R

RHODIUM

A hard metal used as a protective coating for cases.

ROMAN NUMERALS

I,II,III, V etc, numerals used as markings on the dial.

ROTOR

In automatic watches, the rotor winds the mainspring. In quartz watches it is a permanently rotating magnet.

S

SAPPHIRE CRYSTAL

A glass that is made of synthetic sapphire.

SECOND HAND

This is the thinnest hand anchored in the centre of the face. On quartz watches this moves every second. On an automatic this hand moves smoothly, sweeping by each marker in second increments.

SHOCK-RESISTANT

A watch is classified as shock resistant if it can withstand being dropped onto a hard surface from a height of 1 metre.

SKELETON WATCH

A watch whose interior mechanism and movement are visible.

SPLIT TIME

A function that allows the user to view one time while continuing to record a second time.

STEM

The shaft connection between the winding mechanism and the crown.

SUBSIDARY DIALS

Smaller auxiliary dials showing elapsed minutes and running seconds.

“SWISS MADE”

This can only feature on a watch if at least 50% of the components are of Swiss manufacture b) if it was assembled in Switzerland c) it was started up and regulated by its manufacturer in Switzerland and d) the brand/style is continuously subject to technical inspection in Switzerland.

T

TACHYMETER

A function of a watch chronograph similar to a stop watch feature that can measure the rate of speed travelled over a measured distance in a particular length of time.

W

WATER RESISTANT

Watches designed to withstand a designated water pressure depth.

WORLD TIME WATCH

A watch that can depict the current time in any city or zone.

WATCH WINDER

A machine designed to keep automatic watches running when they are not being worn on a wrist. The machine is powered by either battery or electricity.