Set of Ten - 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 money. 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.