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Nicolas Auguste Tissot (French:; March 16, 1824 – July 14, 1907) was a French cartographer, who in 1859 and 1881 published an analysis of the distortion that occurs on map projections. He devised Tissot's indicatrix , or distortion circle, which when plotted on a map will appear as an ellipse whose elongation depends on the amount of ...
Date display in big window, ETACHRON with finetiming device 2897 [18] Yes Yes sweep second Yes No Yes Yes ETACHRON Power-reserve display 2894-2 [19] Yes Yes small second Yes No Yes Yes ETACHRON Chronograph mechanism with cams, 2 push buttons, chronograph 60 seconds, dragging counters 30 minutes and 12 hours 2834-2 [20] Yes Yes sweep second Yes ...
The complications include the date of Easter, sidereal time, and a 2800-star celestial chart. The Supercomplication delivered to Henry Graves, Jr. in 1933 has 24 complications. The watch was reportedly the culmination of a watch arms race between Graves and James Ward Packard. The Super-complication took three years to design and five to build ...
The Tissot company was also the first to make watches out of plastic (Idea 2001 in 1971), stone (the Alpine granite RockWatch in 1985), mother of pearl (the Pearl watch in 1987), and wood (the Wood watch in 1988). [2] Tissot introduced its first tactile watch, with "T-Touch," technology in 1999; watches containing this technology have touch ...
Tachymeter scale on a Citizen watch bezel. A tachymeter (pronounced / t æ ˈ k ɪ m ə t ər /) is a scale sometimes inscribed around the rim of an analog watch with a chronograph.It can be used to conveniently compute the frequency in inverse-hours of an event of a known second-defined period, such as speed (distance over hours) based on travel time (distance over speed), or measure distance ...
Mathey-Tissot no longer produces its own watch movements in house. Instead, the company customizes mechanical and quartz watches with movements sourced from others. [4] Its logo is similar to the "peace symbol" of the Campaign for Nuclear Disarmament, but turned upside-down, with the words Mathey-Tissot in manuscript, above the printed words "since 1886".
A balance wheel, or balance, is the timekeeping device used in mechanical watches and small clocks, analogous to the pendulum in a pendulum clock.It is a weighted wheel that rotates back and forth, being returned toward its center position by a spiral torsion spring, known as the balance spring or hairspring.
Inside a chronometer mechanism (c. 1904)A chronometer (Ancient Greek: χρονόμετρον, khronómetron, "time measurer") is an extraordinarily accurate mechanical timepiece, with an original focus on the needs of maritime navigation.