HOW DOES THE TACHYMETER FUNCTION ON CASIO EF SERIES WATCHES WORK?

I also wrote it above, I don't know what the use is, maybe it looks good, whatever!

Tachymeters are used to determine the average speed when you are on a high-speed moving object, such as a car or motorcycle. For example, if a car is running on a highway, there are usually milestones on both sides of the highway, and the distance between the two milestones is generally 1 kilometer. When you pass the first milestone in the car, press the button to start the stopwatch, when the car passes the second milestone, stop the stopwatch, then the number on the distance meter corresponding to the position of the second hand is the average speed, for example, the second hand stays on the 70 of the distance, then the speed is 70 kilometers per hour.

If there are no milestones on the road, you can also look at the odometer on the car to locate a kilometer.

Consult questions about the adjustment of the stopwatch of the analogue watch, here I follow the official manual. Generally, the outer ring of a watch with a stopwatch function will be engraved with 500, 400, 350, etc., which will decrease in turn. How is the position of the number on the bezel calculated?

It's actually quite simple...

Consult about the stopwatch tuning of the analogue watch, here I follow the official manual. A hail is good, and the outer ring of the watch with a stopwatch function will be engraved with 500, 400, 350, etc., which will decrease in turn. How is the position of the number on the bezel calculated?

It's actually quite simple...

To put it simply, turn on the stopwatch, and when you go one kilometer, the number that the second hand points to (e.g. 120) is your speed just now - 120 kilometers per hour.

Generally speaking, it is only available in chronographs, which calculate the speed of the car, for example, when you press the stopwatch when you sit in a car, the second hand indicates how much speed is after one kilometer.

Tachymeter Distance Gauge.

The rotation scale of the outer ring of the surface is mainly used to adjust the time difference.

For example, if you want to increase or decrease the time by one hour across a time zone, you can check the local time by adjusting the outer ring of your watch, and the inner ring scale will also let you know the time in your own city.

Tachymeter originally meant tachymeter: a measuring instrument used to quickly determine distance, height, and bearing. Your watch is a bit advanced. And this feature. Strong..

Ordinary tachymeter, starting at 60 yards, the specified distance is 1 km. When the chronograph button is pressed after the first reference object is passed, and the pause button is pressed when the second reference object is passed, and the reading of the hand pointing to the outer ring is the speed.

Detailed note: Watch speed measurement is a chronograph engraved with 500 400 350 and other decreasing numbers on the outer ring of the watch, these represent the physical quantity of speed, the unit is kilometers and hours; This bezel is called a tachymeter.

How to use the watch speed test:

The usage method is to take the vehicle driving on the highway as an example, because the highway is generally erected with distance indication signs; The stopwatch is activated when the start point is passed, and the stopwatch hand starts at 12 o'clock and stops when it moves 1 km, and the number pointed by the hand is the average speed of the previous km.

For example, if there is 60 at 12 o'clock, because you have walked 1 kilometer in one minute, then the speed is 60 kilometers per hour.

How is the position of the number on the bezel calculated? It's actually quite simple...To know where the number 500 should be engraved?

Then you need to do a simple division; That is, calculate how much time it takes to travel 1 km at a speed of 500 km/h, in seconds.

1 hour = 3600 seconds, then 500 kilometers need 3600 seconds to complete, according to the principle of proportionality, the time required for 1 kilometer is 3600 500 = seconds, so 500 must be engraved on the second of the dial. In the same way, 400 should be engraved at 3600 400 = 9 seconds, while 100 should be engraved at 36 seconds.

At speeds below 60 km/h, the tachymeter cannot be used directly unless the scale value for low speed is added.

It's the right question!

I also have a piece of 524SP, which has a chronograph function to tell you the time, and it looks like this: 6 o'clock, second hand.

The large second hand (half red and half black) is the second hand of the computer.

At 12 o'clock, it is the minute hand (the big second hand goes one step in one circle), and at 9 o'clock it is the hour hand of the computer (it moves one square when the hour is counted).

Casio EF-524SP comes with a computer timekeeping function.

The three subdials function like this: the chronograph seconds hand at 6 o'clock, while the big seconds hand (half red and half black) is the second hand of the computer. At 12 o'clock, it is its minute hand (the big second hand goes one square when it goes around).

The 9 o'clock direction is the hour hand of the chronograph (it goes one tick for an hour).

Chronograph is a professional name where chrono means "time" in Old English and Latin, while graph means "recording tool" in English. A general watch that continuously indicates the passage of time. Chronographs, on the other hand, can record the length of any period of time.

The standard chronograph has a 30-minute or 12-hour chronograph function. The second hand on the surface of the ** usually stops at the zero point. In order to show that the timepiece is in motion, a perpetual small seconds hand is usually added.

There are two types of chronographs, the first is a normal chronograph with only one measuring object, and the other is a two-second segmented chronograph with two measuring objects.

Generally speaking, chronographs are divided into single second hand, double second hand, single button, double button type and other structures according to their design, if the purpose of dial design is concerned, the most common are chronographs that measure speed, such as the omega moon lander, the Ulysse Nardin pulse meter that measures pulse, and the Janeiro chronograph that Tissot can measure distance and speed. As for the method of distinguishing the function, as long as you pay attention to the English words around the dial, you can know, such as tachymeter (tachymeter), telemeter (distance meter), pulsations (pulse measurement function), in fact, the way to operate the chronograph is exactly the same, the difference is only in the difference of the scale, the data displayed on the different scale illustrates different functions, but most of the common chronographs are still to measure the speed as the main function.

The most common calculation scale system used in chronographs is usually located on the outermost part of the dial or above the outer ring of the case. The main principle is that a certain unit distance is known, such as:

1 km or 1 mile, when a moving object starts to move within this distance, the start function of the chronograph is activated, and when the stop button is pressed again after the unit distance is completed, the speed of the object is the scale indicated by the hand. If the scale system is a single-turn design, the speed of the object is less than 60 kilometers per hour, and the computer fails; The scale is a spiral design of the computer, will not meet the general stopwatch function of the watch bezel will be engraved with 500 400 350 and other decreasing numbers in turn, these represent the physical quantity of speed, the unit is kilometers and hours; This bezel is called a tachymeter. For example, a car has an average speed of one kilometer or one mile at a fixed level.

Take the vehicle speed measurement method as an example, when the car advances with the mileage mark of the roadside as the reference point, start to activate the timer, when the car reaches the next mileage marking point, the timer presses to stop, and the position that the timer pointer stays on the speed gauge scale is the speed of this car, such as 1,000 meters used for 45 seconds, then can be converted to the speed of the car traveling 80 kilometers per hour.

Displays the day, month, and week respectively.

It seems like most of this card is quartz, and quartz doesn't need to be wound.

Press the B button to reset the stopwatch and check if the position of the stopwatch second hand and the second hand point to 12 o'clock.

If the position is incorrect, pull out the watch knob to the second square, press the A button to turn the second hand of the stopwatch to adjust it to the 12 o'clock position. If the hands are still not aligned correctly, (for example, the hands of the bottom bezel do not point correctly to the 12 o'clock position), press the B button to turn the stopwatch hand to adjust. Make it adjust to homing.

Most watches with a run-up function have numbers like on the bezel. These numbers represent the meaning of speed, in kilometers and hours, and that's what the tachymeter is all about. For example, a car is moving at an average speed of a fixed kilometer or a mile.

For example, when the car is moving forward with the roadside mileage marker as the reference point, the timer is activated. When the next journey point is reached, the timer presses to stop. The position where the timer hand rests on the tachymeter scale is the speed of the car, which can be converted to the speed of the car if 1,000 meters are used for 45 seconds

kilometers per hour.