Messes. Editors—Mr. Simeon Halton, of his place, an ingenious mechanic, has just )rought out a dial thermometer, in which the ise of liquid of every kind is dispensed with. Fhe instrument is ...

In this image he’s using a thermocouple to monitor the temperature of the melting surface, but mentions that you can do this with an inexpensive dial thermometer and will still have great results.

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