A chronograph keeps ordinary time and also measures an interval you start and stop yourself. To use one, identify the start/stop pusher, the reset pusher, and what each hand and counter displays on your specific watch, then confirm those details in that model’s manual. Layouts and reset rules differ between manufacturers and even between calibers from the same brand.
What a chronograph measures
The chronograph is an elapsed-time function built on top of the watch’s normal timekeeping. The watch keeps showing the time while the chronograph mechanism records how long a period lasts. Omega’s user manual for reference 311.93.44.51.99.002 defines it this way: “The chronograph or chronoscope is a mechanism that can be actuated by pushers, making it possible to measure a time between two events and to indicate it through hands.” (Omega user manual)
The familiar arrangement has two pushers, a central chronograph seconds hand, and one or more smaller counters. That is the most common pattern, not a universal one. Timex states plainly that chronograph layouts vary by model, so the counters you see on one watch may not match another. (Timex)
Working the pushers
On the common two-pusher layout, the upper pusher starts and stops timing, and the lower pusher resets the hands to zero. Hamilton’s chronograph guide (dated June 6, 2022) describes this usual arrangement. (Hamilton) Use this sequence for a standard single interval:
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- Men's luxury timepieces with technical advancements and a sporty style
- 1/5 Second Chronograph Measures up to 60 Minutes, 12/24 Hour Time, Date
- Silver-Tone Stainless Steel
- Spherical Mineral Crystal
- 100 Meters Water Resistant and 5 Year Limited Warranty
- Confirm in the manual which pusher is the start/stop control and which is the reset control.
- Press the upper pusher once. The chronograph hand begins to move.
- Press the upper pusher again. The hand stops, and the reading shows the elapsed time at that moment.
- Press the lower pusher to return the chronograph hands to zero. On Omega’s reference covered by its manual, reset works only while the chronograph is stopped, so pressing it while the hand is running will not clear the measurement.
Expect the chronograph hand to return to its zero position after a successful reset. If it does not, read the manual’s reset section before pressing anything else, because some movements have specific sequences and some pusher combinations are not meant to be used together.
Cumulative timing
Some chronographs can add several intervals together without resetting between them. TAG Heuer’s user guide for the TH80 caliber describes this cumulative procedure: start and stop each interval, read the running total, and then reset when finished. (TAG Heuer TH80 user guide) Shinola also describes accumulated timing for some of its movements, but the steps differ between its quartz and automatic models. (Shinola) Treat these as examples of how one manufacturer documents its movement, not as a feature every chronograph has.
Reading the hands and subdials
Start with one observation: reset the chronograph and see which hand returns to zero and which hand keeps moving independently. That tells you which hand belongs to the chronograph and which one shows ordinary time. On some designs the long central seconds hand is the chronograph seconds hand and moves only during a timing operation, while a small subdial shows the watch’s continuously running seconds. Timex notes that subdial design and placement vary across models. (Timex)
Typical counter functions
The most common counters record elapsed minutes and hours, but not every subdial is a timing counter. Some show ordinary time information, such as a 24-hour indication. Tissot’s manual for its automatic chronographs (marked 02.08) illustrates one arrangement:
Rank #2
- Stainless Steel case with Black Resin Band
- Black Dial with date window at 3 O'clock
- Luminous markers and hour hands; sweep second hand
- Anti-reverse bezel
- Water-resistant to 200 M (660 feet)
| Counter | What it records | Documented range |
|---|---|---|
| Central chronograph seconds hand | Seconds within the current interval | One revolution per minute, as a 60-second counter |
| 30-minute counter | Elapsed minutes | 30 minutes |
| Hour counter | Elapsed hours | 6 or 12 hours, depending on the model |
The same Tissot manual states that its documented model times events up to 12 hours and displays results to the nearest 1/10th of a second. These are specifications for that cited model, not general chronograph capabilities. (Tissot manual)
Using the tachymeter
A tachymeter is a scale printed on the bezel or dial that converts elapsed time into speed over a known distance. It works only when the distance you measure matches the scale’s stated distance.
- Note the exact start point and the end point, which must be the distance printed on the scale.
- Start the chronograph as the vehicle or object passes the start marker.
- Stop the chronograph as it passes the end marker.
- Read the chronograph hand against the tachymeter scale and confirm the scale’s units before recording the result.
Omega’s manual describes timing a car over one kilometre and reading the speed on the scale. The scale on that model corresponds to timing durations of approximately 7 to 60 seconds. Tissot’s manual describes the same one-kilometre method and reads results as kilometres per hour on its tachymetric scale. (Omega manual; Tissot manual) A tachymeter calibrated for one kilometre gives a misleading result if you time a different distance with it, so check the scale before relying on it.
Model-specific cautions
Manufacturers document their controls differently, and the differences matter in practice. Work through these points before operating an unfamiliar watch:
Free tools Windows power users keep installed
One-click scans. No signup required.
Rank #3
- Men's luxury timepieces with technical advancements and a sporty style
- 1 Second Chronograph Measures up to 60 Minutes, 12/24 Hour Time, Date
- Silver-Tone Stainless Steel Case
- Mineral Crystal
- 100 Meters Water Resistant and 5 Year Limited Warranty
- Reset may be restricted. Omega’s manual states that reset is available only while the chronograph is stopped.
- Some resets can damage the movement. Shinola warns that pressing its reset pusher while certain automatic chronographs are running can damage the movement. (Shinola)
- Accumulated timing is not standard. TAG Heuer’s TH80 procedure and Shinola’s movement-specific method are different, and neither applies to every chronograph.
- Do not experiment with unfamiliar combinations. If you do not know what a pusher does on your model, consult the official manual for that exact model or caliber rather than testing it on the watch.
Comparing chronographs
When you compare chronographs, the number of subdials matters less than what each one actually does. Useful criteria include:
- the movement and the behavior its manual documents
- the counters and the maximum elapsed time they can record
- whether the watch offers cumulative, split, or flyback timing
- dial legibility at a glance
- whether a tachymeter or another scale suits the task you have in mind
The table below collects the specifications stated in the manuals cited in this guide. Where a manual does not state a value, the cell says so rather than estimating one.
| Model or caliber (source) | Pusher behavior documented | Timing capacity or scale |
|---|---|---|
| Omega 311.93.44.51.99.002 (user manual) | Reset works only when stopped | Tachymeter scale corresponds to about 7 to 60 seconds for a one-kilometre measurement; maximum elapsed time not stated |
| Tissot automatic chronographs, manual 122_EN (marked 02.08) | Start, stop, and reset controls described for the model | Times events up to 12 hours; displays to 1/10 second |
| TAG Heuer Caliber TH80 (user guide, labeled 03.2026) | Cumulative timing: start and stop each interval, read the total, then reset | Maximum elapsed time not stated in the cited guide |
| Shinola (how-to page, undated) | Accumulated timing differs between quartz and automatic models; reset while certain automatic chronographs run can damage the movement | Not stated on the cited page |
Hamilton’s guide and Timex’s explainer are useful for general operation, but they do not give model-level counter specifications, so use the manufacturer’s manual for those details.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
