Try a restaurant supply business.  Back in my pseudo-chef daze, it seems 
like we had a thermometer that went upwards of 300+ degrees and had a 
probe approx. 5 inches long (...resist the temptation to crack wise) ;-)

        Bob Hufford                   \\  //   
     "...in the GROOVE"           \\   \\//   //     '60 Double-Door Panel
 General Registry Of Ozarks'       \\   \/   //      '69 Bus (Sunroof)
   Volkswagen Enthusiasts           \\ //\\ //       '81 Vanagon (Sunroof)
   bhufford@mail.orion.org           \\/  \\/        '61, '63, '67 Bus Bones

On Wed, 26 Jul 1995, Mike White wrote:

> Hello friends!
> 
> With all the talk of overheating I went in search of a candy 
> thermometer, but of the many places I tried I came up empty handed.
> 
> All of the candy thermometers are encased in glass casing which is 
> about 1/2 inch wide (of those that I saw), and would be too wide to 
> fit down the dipstick hole.  
> 
> I saw some meat thermometers which looked great (would fit sizewise), 
> but alas they only go to 180 degrees or so.
> 
> Any suggestions?
> 
> - Mike White 
> 
> [Mail: mike.white@law.utah.edu   -   mwhite@eng.utah.edu]
> [http://www.cc.utah.edu/~mw1759/index.html]
> 
>  
> 
> 
>