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In an earlier post, we reviewed some basic watch terminology that refers to the outside of a timepiece — from the case to the bezel, dial, crown and lugs. Today, we take this to the next level, where we identify some of the other features/functions you may find on a watch.

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Subsidiary Dial/Subdial. Often, instead of having three hands to tell the hours, minutes and seconds, a watch may have only the hours and seconds shown using hands, and may have a smaller subsidiary dial (subdial) — usually at 6 o’clock — to show the only the seconds. This is generally an added aesthetic feature.

Minute track. Some watches have an outer track on the dial that is used to measure minutes. It looks like a tiny railroad track running along the outer portion of the dial. It is designed to make reading of the minutes even easier.

(The image, above, shows both a subdial and a minute track on the outer edge.)

Push pieces. Especially on a chronograph (a watch that times events), a watch case will feature push pieces. These are added pushers (usually above and below the crown on the side of the case) that activate the added function. In the case of a chronograph, the added push pieces start and start the timing of the event. There are some other functions that can have push pieces, as well. Generally, whenever a watch has a protrusion on the case side other than the crown, it has some added function.

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Tachymeter. Often sport watches will have a scale on the bezel that enables the wearer to calculate speed based on travel time, or to measure distance based on speed. The scale is inscribed with numbers and spaces that are proportional so the wearer can convert elapsed time to speed, etc. There are also a host of other types of meters a watch can have, but that is a subject for another post. Stay tuned.

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