Orchard thermometer allows you to monitor nightly low temperatures
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. 1-3/4"W x 12-1/4"H. Includes instructions. Imported.
2016 Master Catalog: Page 453