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Postcard Thermometer

Postcard Thermometer
Original:
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Stock #: 621633
Type: Postcard
Era: Continental Chrome
Publisher: DaMert Company
Size: 4" x 6" (10.25 x 15.25 cm)
Additional Details:
The front of this card has been coated with 8 bands of thermal sensitive liquid crystal, each formulated to display color in the degree range indicated.

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