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Post by foghorn on Jul 21, 2007 16:19:41 GMT -5
It might not be a complication that everyone will find useful but Ball Watch Co. utilizes a working thermometric scale in the Trainmaster TMT model.
This feature is also found on various quartz watches but is extremely rare on a mechanical timepiece.
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Post by Rusty on Jul 23, 2007 14:58:46 GMT -5
What is its purpose, foggy?
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Post by foghorn on Jul 23, 2007 15:19:01 GMT -5
What is its purpose, foggy? Tells the temperature.(but you have to take it off, I assume, for a correct reading) Required on a timepiece-No. Different and unique-Yup. |
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Post by Scott D on Jul 24, 2007 8:01:05 GMT -5
Can it tell the temperature of the people around you? That would be very useful... "uh oh - the wife's getting ticked, better back down & stop looking at watches!"  ;D That's a watch all WIS's would buy!!!  |
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Post by Rusty on Jul 30, 2007 7:47:44 GMT -5
Duh. . . THERMOMETRIC. . . I get it.  |
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Post by boscoe on Aug 1, 2007 16:22:24 GMT -5
Hot stuff!
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Post by timefinder on Aug 1, 2007 20:52:01 GMT -5
MEchanical thermomenter (sp?) ? What is the mechanism behind it?
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Post by bullosa on Aug 2, 2007 21:50:13 GMT -5
The Mechanical thermometer works by a bimetal spring that moves a gauge according to temperature. It is useful if you are in extreme temperature activities.
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Post by Jeremy from Ball on Aug 6, 2007 21:25:00 GMT -5
No air enters the TMT watches. That would ruin the water resistance.
The TMT functions by conduction through the case itself. The steel or titanium case will be the same temperature as the ambient air, and it transfers that temperature to the bimetallic strip.
This is why we are required to remove the TMT before temperature measurement - otherwise it would register body temperature because it is touching the skin.
One point we always make sure to inform our staff is that on the wrist of our Ball Explorers - over a parka, ski suit, or wetsuit - the TMT will measure the temperature perfectly with no delays.
Bullosa is right - a bimetallic spring is at the heart of the TMT movement. The two metals contract at varying rates, so the coil expands or contracts with temperature changes. The resulting motion moves the hand. It's accurate to within 3% and informal testing has shown that the TMT beats electronic thermometers of similar size.
There are currently 2 TMT models, the Trainmaster TMT and Engineer Hydrocarbon TMT, with two more to come: the limited edition Diver TMT and the limited edition TMT Titanium ("Mad Cow TMT").
Cheers,
Jeremy
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Post by boscoe on Aug 6, 2007 21:47:19 GMT -5
Thanks for the explanation Jeremy - right from The Mad Cow's Mouth, so to speak.
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Post by Scott D on Aug 6, 2007 21:54:19 GMT -5
Wow.. Great info, thanks!
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Post by timefinder on Aug 7, 2007 7:17:09 GMT -5
 Wow Thanks for the info! |
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Post by Jeremy from Ball on Aug 7, 2007 7:51:56 GMT -5
Well put. Although Mad Cow would probably be saying it at 150mph or some such craziness! Thanks for the explanation Jeremy - right from The Mad Cow's Mouth, so to speak. |
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;D That's a watch all WIS's would buy!!! 
Wow