Monitor nightly low tempertures
Horizontally mount this minimum-registering thermometer in your orchard or nursery to keep up to date on critical nightly low temperatures. Non-hazardous red liquid displays the current temperature while the black marker shows the lowest temperature since the thermometer was last reset. Tilt thermometer to reset. Range is from 10°F to 100°F in easy-to-read increments. 13/4"Wx121/4"H. Instructions included. Imported.
2015 Master Catalog: Page 453