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    Re: How Many Chronometers?
    From: Gary LaPook
    Date: 2009 Sep 20, 12:11 -0700

    I considered that too and I also suspect that such a small heater could 
    be made today with solid state controller that would use just a small 
    amount of electricity but I wanted to keep it simple, using things 
    normally available.
    Philip wrote:
    > Since it has already been discovered by the list that it is easier to
    > maintain temperatures above ambient, eg. crystal heaters in HF radios,
    > than below, i would suggest a small well insulated box with a
    > thermostatically controlled heater (one or two watts, 12-15v DC?). The
    > Watch could be viewed through a double or triple insulated glass window
    > so as to not disturb the thermal equilibrium.  This would be a nice
    > project not beyond the capabilities of many of us. A couple of LED's to
    > indicate operating temperature and power on and it would be a nice piece
    > of kit to have at the nav station.
    > Philip
    > , 2009-09-20 at 01:40 -0700, Gary LaPook wrote:
    >> So, if the cabin can't be maintained at around 25ºC then an alternate
    >> way to stabilize the watches can be utilized. Simply buy a small
    >> cooler and put the watches and some ice in it and establish their
    >> rates at this cooler temperature, they should be running slow. 
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