How to Use Tachymeter Function on Watch Bezel - Usage Instruction and Definition如何使用tachymeter功能上觀賞外框-使用的指示和定義

On some of the analog watches or wristwatches from branch such as Omega and Casio, there is a outer scale bezel that inscribed around the rim and named tachymeter (also known as tachymetre or tacheometer).對一些模擬手錶或手錶，從科，如歐米茄和卡西歐，是有外尺度外框者認為，周圍環和命名tachymeter （也稱為tachymetre或tacheometer ） 。 If you flip through the watch’s user guide or manual, you will not likely to find any explanation or definition on what is tachymeter or how to use the tachymeter functionality.如果你翻開手錶的用戶指南或手冊，您將不會有可能找到任何解釋或定義，對什麼是tachymeter或如何使用tachymeter功能。 Tachymeter is actually a tool used to compute speed based on travel time over a fixed distance travelled (like one mile or one kilometer). tachymeter其實是一個工具，用於計算速度的基礎上旅行時間超過一個固定的路程（如1英里或一公里） 。 Thus, the tachymeter bezel or dial is a logarithmic scale (actually it’s not, as spacings between the marks on the tachymeter dial are proportional to 1/t where t is the elapsed time) that simplifies the computation of speed of an object, by computing the following function:因此， tachymeter外框或撥號是一個對數規模（其實不是的話，作為間距之間的馬克對tachymeter撥號比例1 /噸其中T是經過時間）表示，簡化了計算的速度，一個對象，通過計算下列功能：

Tachymeter Dial = 3600 / Elapsed Time In Seconds tachymeter撥號= 3600 /過去了，時間在幾秒鐘

Tachymeter illustration. tachymeter的例證。 Depending on on the range of the scale printed on the bezel, tachymetre timer normally works and valid for all elapsed times from about 7.2 seconds to 60 seconds, thus only able to measure speed greater than 60 miles per hour or 60 kilometers per hour.根據對範圍內的規模已印載於外框， tachymetre計時器通常工程和有效期為所有的時代過去了，從7.2秒到60秒，因此，只能夠衡量的速度大於60英里每小時或60公里的時速。

To use tachymeter, simply start the chronograph or stopwatch when the object measured passing the starting line.使用tachymeter ，只需啟動計時秒錶或對象時衡量合格的起跑線上。 When the object reaches the next mile or kilometer marker, stop the chronograph or stopwatch.當對象達到未來英里或公里的標誌，停止計時或秒錶。 The point on the tachymeter scale that adjacent to the second hand of the watch indicating the speed (in miles per hour or kilometers per hour) of object traveling between the two points.這一點對tachymeter規模毗鄰二手的手錶顯示的速度（以英里每小時或公里每小時）的對象來往的兩點。

For example, we want to measure the average speed of a vehicle is moving.舉例來說，我們要衡量的平均時速的車輛是感人。 Start the chronometer or stopwatch function when the car passes the starting line, and stop the timer after the vehicle traveled exactly 1 mile or 1 kilometer.啟動計時器或秒錶功能，當車通過的起跑線上，並停止計時器後，車輛走過的正是1英里或1公里。 Then look at where the chronometer hand (the second hand of the watch) is pointing to, and get the reading or value of the corresponding number at the tachymeter bezel or dial.然後看看那裡計時器手（二手的觀賞）是指向，並得到讀或價值的相應數字在tachymeter外框或撥號。 Let’s say the stopwatch stop at 3 o’clock position, meaning 15 seconds had elapsed for the car to travel 1 mile or 1 kilometer.讓我們說，秒錶停留在3點鐘的位置，這意味著15秒已經過去了，為汽車旅行一英里或1公里。 At 3 o’clock position, the tachymetre value shows that number of 240, which means the average speed of the vehicle was 240 mph or km/h.下午3時的立場， tachymetre值顯示，這一數字為240 ，這意味著平均時速的車輛是二百四十○英里每小時或公里/小時。

Due to the limitation and constraint on the tachymeter scale mentioned above which makes tachymetre measurements works and valid only for certain range of speed, so in order to calculate and measure slower speeds or higher speed, user can decrease or increase the unit of measurement (eg change to half-miles or half-kilometers, or ten miles or ten kilometres).由於限制和約束就tachymeter規模，上述這使得tachymetre測量工程，並只適用於一定範圍內的速度，因此，為了計算和測量速度慢或更高的速度，用戶可以增加或減少的測量單位（如改變半英里或半公里，或10英里或10公里） 。 However, simple calculation is needed in order to get the correct average speed by using this technique.但是，簡單的計算是需要的，以便獲得正確的平均車速通過使用此技術。 It’s also true if the length of the distance does not exceed a unit of mile or kilometer, or other unit which the speed will be based on.它也真實，如果長度的距離不超過一個單位英里或公里，或其他單位的速度，將依據。

For example, if we want to measure how fast the 200m athlete is running.舉例來說，如果我們要衡量的速度有多快200米運動員正在運行。 Start the chronometer when the race starts, and stop the stopwatch when athlete crosses the finishing line.啟動計時器，當比賽開始，停止秒錶，當運動員越過終點線。 Let’s say the athlete used 20 seconds to finish 200m running, so according to tachymeter, the speed of the athlete is 180 km/h.讓我們說，運動員使用的20秒完成200米跑，因此，根據tachymeter ，速度，運動員是180公里/小時。 However, the athlete only ran one fifth (1/5) of a kilometer, so we should divide 180 with 5 or 1/5 of 180, which mean the actual speed of the runner is 36 km per hour.但是，運動員只有然五分之一（ 1 / 5 ） 1公里，所以我們應該鴻溝180 5或1 / 5 180 ，這意味著實際的速度，亞軍是36公里為一小時。

The above example can be used for object or thing that moving too slowly too, as when the object travels 1 mile or 1 kilometer, the duration would have exceed 60 seconds, the maximum limit of tachymeter.上面的例子中可用於物體或一件事，太慢，因為當對象旅行1英里或1公里，持續時間將超過60秒，最高限額tachymeter 。 So the possible workaround is to measure the time taken for the object to move a shorter distance (such as 100m) and divide the tachymeter value with 10 (as 100m is 1/10 of a kilometer).因此，有可能替代方法是測量花費的時間為對象的動議在較短距離內（如百米）和分化tachymeter價值10 （百米是1 / 10 1公里） 。

What if the object travels too fast, such as a rocket or plane.如果對象旅行太快，如火箭或飛機。 In this case, user can increase the units of the distance covered by the object to measure a longer period of time so that the duration is greater than at least 7.2 seconds (typically the lower limit).在這種情況下，用戶可以增加單位的距離，所涵蓋的對象來衡量一段較長時間，讓時間大於至少七點二秒（通常為下限） 。 We can measure the time taken by the object to cover 10 miles, let’s say it took 30 seconds, so the tachymeter will tell us the the speed is 120 miles per hour.我們可以衡量的時間所採取的對象涵蓋10英里，讓我們說了30秒，所以tachymeter會告訴我們的速度是120英里每小時。 However, 10 miles have been traveled, so that actual speed is 120 times 10, which is 1200 mph.然而， 10英里已經走過的，使實際速度的120倍，是10 ，這是一二零零英里每小時。

Wikipedia維基百科 also explains that function performed by a tachymeter is independent of unit of distance (ie is not specific to miles or kilometers).還解釋說，履行的職能由一個tachymeter是獨立的單位的距離（即不具體，以英里或公里） 。 A tachymeter can be used to measure speed in nautical miles per hour or meters per hour, or to measure an industrial production process in units per hour. 1 tachymeter可以用來衡量的速度在海裡每小時或米每小時，或以衡量工業生產過程中單位每小時。 A tachymeter is simply a means of converting elapsed time in seconds per X to X per hour . 1 tachymeter只不過是一種手段，轉換的時間過去了，在幾秒鐘百分之十的x ％小時 。

IMPORTANT : This is a machine translated page which is provided "as is" without warranty. 重要說明 ：這是一個機器翻譯網頁是“按原樣”提供的擔保。 Machine translation may be difficult to understand.機器翻譯可能很難理解。 Please refer to請參閱 original English article原來的英語文章 whenever possible.只要有可能。

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