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Crystals are monoammonium phosphate - the best crystal grower
Stylish walnut platform
an introduction to magnetism
1 degrees centigrade
with large-print readout screen
Outdoor Digital Max/Min thermometer Classic Instrument Crystals are monoammonium phosphate -A digital maximum minimum thermometer featuring a hardy splashproof body and hooded front, useful for leaving outdoors. (Handy for inside too, though!) The display shows current temperature, plus the highest and lowest temperatures since you last reset it. All this data is shown on the same screen, making for easy reference. Ideal for garden, greenhouse, or fridge and feezer. 115 x 75 x 44mm. Range: 40 degrees C to +70 C (Switchable to Fahrenheit).
