This Porthole clock combines the best of both worlds; the modern-day
electronics of the Radio Control Clock with the traditional beauty of a
solid brass porthole and mahogany finished frame. All brass is hand polished
and lacquered for long-lasting enjoyment. It is beautiful yet extremely
accurate.
To setup, insert an AA battery, select your time zone with the clearly
marked knob, and then hang it on the wall. The clock will automatically set
itself to the exact time.
Each instrument is provided with complete instructions, mounting hardware,
lifetime warranty, and a fresh battery. Wt. 3 lbs. 15 oz.
Our Price: $140.00
SPECIAL
Brass WWVB Barometer
Dial: 6-1/8". Base: 8-13/16". Depth: 1-7/8".
Weems & Plath®
Radio Control Clocks
Click to Enlarge!!
This new open dial barometer was designed to match the popular Brass WWVB
Radio Control clock that was introduced last year. The open dial is popular
with those who love to see the workings of the movement. The generous dial
size of these two instruments makes them perfect for wall mounting. Each
instrument is housed in a brilliant polished brass case, lacquered to keep
its shine for many years to come. Wt. 20 oz.
Our Price: $148.50
SPECIAL
Brass WWVB Clock
Dial: 6-1/8". Base: 8-13/16". Depth: 1-7/8".
Weems & Plath®
Radio Control Clocks
Click to Enlarge!!
Radio Control Clocks Nothing is measured more precisely than time!
Since the beginning of time, man has been fascinated with the measurement of
time and has devised more accurate machines to trap and measure time. Today,
time is precisely controlled in the United States by the most accurate clock
in North America, the atomic clock of the US National Institute of Standards
and Technology, Time and Frequency Division in Boulder, Colorado.
A Team of atomic physicists continually measures every second of every day
to an accuracy of ten billionths of a second per day. These physicists have
created an international standard, measuring a second as 9,192,631,770
vibrations of a cesium 133 atom in a vacuum. This atomic clock regulates the
WWVB radio transmitter located in Fort Collins, Colorado, where the exact
time signal is continuously broadcast throughout the United States at 60 kHz
to take advantage of stable longwave radio paths found in that frequency
range. Radio waves at these low frequencies use the earth and the ionosphere
as a wave-guide and follow the curvature of the earth for long distances.
The built-in antenna system will receive the WWVB signal anywhere in North
America where long-wave reception is undisturbed. A microprocessor activates
the receiver and process the time signal from Fort Collins overnight. Even
adjustment for daylight savings time, and leap second are automatic.
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