Watch movements are the mechanism by which a watch measures and displays time. They may be either mechanical or quartz, with variations of each. The mechanical movement has been used by the watch-making industry for centuries while the quartz movement was first introduced in 1964 at the Tokyo Summer Olympics by Seiko. Both types of movements and the accuracy of each are discussed below.
Mechanical Movements
Traditional mechanical movement watches use the vigor of a spiral wound spring, referred to as the mainspring, to measure time by very regulating the release of vigor by the spring with a series of gears, referred to as the wheel train, and an escapement mechanism to limit and control the winding and unwinding of the mainspring into a periodic and controlled release of energy.
They also use a balance wheel in conjunction with a balance spring, referred to as a hair-spring, to control the appeal of the gear ideas similar to the pendulum in clocks. A tourbillion, an selection in mechanical movements, uses a rotating frame for the escapement, used to control or sell out the effects of gravity in the timepiece. Due to the complexity of the design of a tourbillion, they can be very costly and are found in more costly mechanical watches.
Manual mechanical watches wish the user to rewind the mainspring periodically by turning the crown, modern hand-operated watches are designed to run for 24 to 40 hours per winding, requiring the user to wind the watch on a daily basis. A self-winding or self-acting watch uses the appeal of the wearer's body movements to rewind the mainspring. They use a winding rotor which couples to a ratchet that automatically winds the mainspring. Self-winding watches can also be wound manually to keep them running when not being worn.
Mechanical movements are sensitive to magnetism, position and temperature. They wish quarterly adjustments and maintenance, and thus are more prone to failure. They are literal, to within a range of +/-5 to +/-10 seconds per day, or 3 to 6 minutes per month.
Quartz Movements
Watches utilizing quartz movements have very few intelligent parts, compared to the mechanical movement watch. They use a battery as the electrical source to cause a tiny quartz crystal in conjunction with the crystal that forms a quartz oscillator to resonate at a very stable and specific frequency which is used to more accurately pace the timekeeping of the watch. They are geared to drive the mechanical hands on the face of the watch to supply a original analog display, which is favorite by most consumers.
Quartz movement or electronic watches are more literal, than mechanical movement watches. They are ordinarily literal, to within +/-.5 seconds per day, or to within 3 minutes per year. The most literal, quartz movements are thermal compensated and are literal, to within +/-5 seconds per year. Quartz watches are ordinarily less costly than mechanical watches and wish very little maintenance, ordinarily consisting of changing the watch battery every year or two.
Conclusion
Quartz movement or electronic watches are ordinarily less costly and more literal, than watches powered by mechanical movements. They wish far less care and maintenance than their mechanical counter-parts. Mechanical watches, on the other hand, with proper maintenance and routine adjustments say their value far longer than quartz watches. Personal preference and the intended use should be the determining factors when selecting a watch.
© J. Michael Wright
Seiko seiko chronograph
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