Temperature sensitive card

Item number: 448.WBK


£ 7.55

including 20% VAT , plus shipping

Available now!

Shipping time: 2 - 3 workdays



A fascinating gadget: wherever this black film is warmed up to 28°C it changes its colour to red. If the temperature rises above that, the colour changes to orange, yellow, green, blue, and purple. At 34°C it turns black again.

Explore your thermal surroundings!

8 x 14 cm