Hello Ian!
The temperature-indicating (color changing) crayons chage color at the
following temperatures:
248, 383, 419, 437, 473, 572, 608, 680, 878, and 1112 degrees f. They are
priced individually at $6.80.
There is another kit of 20 crayons that melt at the indicating
temperature (individual temperatures not listed) over a range from
125-600 degrees f. A kit of crayons costs $27.32 (p/n 3224K22)
73
Frank
W3LPL
donovanf@sgate.com
> >A 10 piece crayon kit is also available, indicating temperatures from 248
> >to 1112 degrees f. Catalog 59635K95 price $ 53.33
> >
> What are the intermediate values, please? A set with closer-spaced
> values going up to 250C/482F would be even more useful.
>
> >McMaster-Carr Telephone: 908-329-3200 M-F 0700-2100 eastern
>
> If anybody is thinking of putting together an order, please e-mail me
> (can pay in US$).
>
> 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'
> 'In Practice' columnist for RadCom (RSGB)
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