TO MEASURE THE HOURLY RATE OF OPERATION

English

1

Use the stopwatch to measure

Ex. 1

 

 

the time required to complete

 

 

 

1 job.

 

 

2

Tachymeter scale indicated by

 

 

 

the STOPWATCH second hand

 

 

 

gives the average number of

 

 

 

jobs accomplished per hour.

 

STOPWATCH second hand: 20 seconds

TELEMETER

(for models with telemeter scale on the dial)

English

• The telemeter can provide a rough indication of the distance to the source of

light and sound.

 

• The telemeter indicates the distance from your location to an object that emits

 

both light and sound. For example, it can indicate the distance to the place

 

where lightning struck by measuring the time elapsed after you see a flash of

 

lightning until you hear the sound.

 

• A flash of lightning reaches you almost immediately while the sound travels to

 

you at a speed of 0.33 km/second. The distance to the source of the light and

 

sound can be calculated on the basis of this difference.

 

Tachymeter scale: "180"

“180” (tachymeter scale figure) x 1 job = 180 jobs/hour

Ex. 2: If 15 jobs are completed in 20 seconds:

"180" (tachymeter scale figure) x 15 jobs = 2700 jobs/hour

16

• The telemeter scale is graduated so that the sound travels at a speed of 1 km in

3 seconds.*

*Under the condition of temperature of 20 °C(68 °F.)

CAUTION

The telemeter provides only a rough indication of the distance to the place where lightning struck, and therefore, the indication cannot be used as the guideline to avoid the danger of lightning. It should also be noted that the speed of the sound differs depending on the temperature of the atmosphere where it travels.

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Seiko Group 6S28 manual Telemeter, For models with telemeter scale on the dial, To Measure the Hourly Rate of Operation
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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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