Lets user calculate average rainfall or sprinkler output in a given timeframe Easy-to-read numerals printed on the sides Scaled in inches and millimeters Molded yellow transparent plastic housing; inch and centimeter scales Comes with 10 Pack 1.5" Rain Gauge Sprinkler Gauge - Outdoor Wide Mouth Measuring Gauges. Set of 10 - 1.5" sprinkler measuring gauges. High quality molded plastic with molded stake.----------10 piece set of rain/sprinkler gauges--------- Closely manage lawn and garden watering with this durable conservation tool. Avoid unnecessary sprinkler use, save water and save energy. A simple and important step in conservation. Our most popular gauge. **Note - can break if trying to jam into hard earth areas, use a screw driver to open area before inserting into hard areas**---------------------Accurate gauge helps manages landscape watering. The base unit has a stake for use on the ground to gauge sprinkler or field watering levels. 1-1/2" Spiked Base Water Gauge Measures Field Or Lawn Watering (Up To 1" Or 2 cm), Bold Black Readings Are In Both Inches & Centimeters