Seiko Group 6S28 manual Tachymeter, How to read the stopwatch minute hand

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English

How to read the stopwatch minute hand

The stopwatch minute hand completes a full rotation in 30 minutes. The correct

indication of the stopwatch minute hand is determined in connection with the

position of the stopwatch hour hand.

 

 

 

 

<Between 0 and 29 minutes>

<Between 30 and 59 minutes>

TACHYMETER

(for models with tachymeter scale on the dial)

TO MEASURE THE HOURLY AVERAGE SPEED OF A VEHICLE

English

Stopwatch minute hand

Stopwatch minute hand

"20 min."

"50 min."

Stopwatch hour hand

Stopwatch hour hand

 

0.5 hour index

0.5 hour index

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2

Use the stopwatch to determine how many seconds it takes to go 1 km or 1 mile.

Tachymeter scale indicated by the STOPWATCH second hand gives the average speed per hour.

Ex. 1

STOPWATCH second hand:

40 seconds

Tachymeter scale: "90"

“90” (tachymeter scale figure) x 1 (km or mile) = 90 km/h or mph

When the stopwatch hour hand is pointing at a position before a short indication (0.5 hour index), read the minutes the stopwatch minute hand is indicating. In the case illustrated above, the measured time should be read as "6 hours 20 minutes and 10 seconds."

When the stopwatch hour hand is pointing at a position after a short index (0.5 hour index), 30 minutes should be added to the minutes that the stopwatch minute hand is indicating. In the case illustrated above, the measured time should be read as "6 hours 50 minutes and 10 seconds."

Ex. 2: If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or miles and the STOPWATCH second hand indicates “90” on tachymeter scale:

"90" (tachymeter scale figure) x 2 (km or mile) = 180 km/h or mph "90" (tachymeter scale figure) x 0.5 (km or mile) = 45 km/h or mph

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Contents Cal S28, 6S37 Contents Self-winding type, automatic winding type Characteristics of a Mechanical WatchNames of the Parts Check the type of the crown of your watch HOW to USEHow to manually wind the mainspring by turning the crown HOW to SET the Time and Date EnglishDate adjustment at the beginning of the month Accumulated Elapsed Time Measurement HOW to USE the StopwatchStandard Measurement How to read the stopwatch minute hand TachymeterFor models with tachymeter scale on the dial To Measure the Hourly Average Speed of a VehicleTo Measure the Hourly Rate of Operation TelemeterFor models with telemeter scale on the dial Stop HOW to Read the Power ReserveEnglish Care of Your Watch To Preserve the Quality of Your WatchRemarks on the automatic mechanism of the mainspring Rash and Allergic Reaction Precautions on Wearing Your Watch Troubleshooting Places to Keep Your WatchAccuracy of Mechanical Watches Specifications

6S28 specifications

Seiko Group's 6S28 movement is an exemplary piece of horological engineering that showcases the brand's commitment to precision and innovation. This automatic movement is primarily known for its use in some of Seiko's popular watches, combining both traditional craftsmanship and modern technology.

One of the defining features of the 6S28 movement is its robustness. With a frequency of 28,800 vibrations per hour, it ensures a high level of accuracy, making it a reliable choice for enthusiasts and everyday wearers alike. This frequency, standard for many of Seiko’s higher-end movements, allows for a smoother sweep of the second hand, which is not only visually appealing but also enhances timekeeping precision.

The 6S28 movement boasts a power reserve of approximately 45 hours, providing ample time between winding sessions. This is particularly advantageous for users who may not wear their watches daily, allowing the timepiece to remain operational without requiring frequent winding. Additionally, the movement incorporates a hacking mechanism, enabling users to set the time with precise accuracy by stopping the second hand when adjusting the hour and minute hands.

A key technological highlight of the 6S28 is its use of Seiko's proprietary escapement design, which minimizes friction and enhances durability. This allows the movement to be less susceptible to wear and tear, prolonging the life of the watch. Furthermore, the 6S28 features a date complication, conveniently positioned for easy readability, enhancing its practical use for daily wear.

Another notable characteristic of the 6S28 is its anti-magnetic properties. This is particularly important for a modern watch, as magnetic fields are omnipresent in today’s environment and can adversely affect timekeeping precision. The inclusion of anti-magnetic materials within the movement adds a layer of reliability that is appreciated by both watch collectors and casual wearers.

In terms of design, the 6S28 movement is elegantly finished, with various details that reflect Seiko's dedication to aesthetic value. The movement is often visible through transparent case backs, allowing wearers to appreciate the intricate workings of the mechanism.

Overall, the Seiko Group's 6S28 movement merges functionality with craftsmanship in a way that meets the high standards of modern horology. Its blend of advanced technology, reliability, and aesthetics makes it a sought-after choice for watch enthusiasts seeking a timepiece that embodies both heritage and innovation.
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