TACHYMETER

(for models with tachymeter scale on the dial)

To measure the hourly average speed of a vehicle

English

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

Tachymeter scale indicated by 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

Tachymeter scale can be used only when the time required is less than 60 seconds.

Ex. 2: If the measuring distance is extended to 2 km or miles or shortened to 0.5 km or miles and 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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Seiko Cal.7T62 manual Tachymeter, For models with tachymeter scale on the dial

Cal.7T62 specifications

The Seiko Caliber 7T62 is a quartz movement developed by the renowned Japanese watchmaker Seiko, notable for its reliability and advanced features. Introduced in the late 1990s, this movement is a part of Seiko's remarkable lineage of quartz technology, showcasing their commitment to precision and innovation.

One of the primary features of the 7T62 movement is its unique chronograph functionality. The movement is designed with a 1/10-second chronograph, allowing for highly accurate timing. This feature is especially appreciated by watch enthusiasts who value precise timekeeping for various activities like racing or sports. The chronograph can be activated through a push-button mechanism on the watch, and it measures time in incremental precision, with some models offering a 60-minute elapsed time indication.

Another significant characteristic of the Seiko Cal. 7T62 is its three-subdial layout, which not only aids in functionality but also enhances the visual appeal of the watch. The main dial usually incorporates a central seconds hand, while the subdials are used for tracking chronograph minutes, hours, and tenths of seconds. This arrangement provides a comprehensive view of the timing functions, making it user-friendly.

In addition to its timing capabilities, the 7T62 is equipped with an overcharge prevention feature. This technology ensures that the battery life is optimized, protecting the movement from damage due to prolonged exposure to excessive charge. This is particularly important in quartz watches, as it helps maintain the integrity and longevity of the timepiece.

The Caliber 7T62 typically operates at a frequency of 32,768 Hz, which is standard for quartz movements. This high frequency contributes to its accuracy, making it a reliable choice for wearers who demand precision in their timepieces. Furthermore, the movement is known for its durability, thanks to the robust materials used in its construction.

The Seiko Cal. 7T62 is often found in a variety of Seiko's watch collections, from sporty models to elegant designs, showcasing its versatility. The movement has gained a reputation among collectors for its blend of technology, functionality, and aesthetics, ensuring that it stands out in the crowded world of wristwatches. With its combination of advanced features and dependable performance, the Seiko Caliber 7T62 remains a prominent choice for enthusiasts and everyday wearers alike.