No need to ask Mary"s advice, the Bosmere pH/Moisture/Light Meter makes it easy to see if your soil is good for growing cockles or anything. Simple and effective, this handy meter requires no batteries and easily checks to see that your soil is ready. About Bosmere For over 25 years, the Bosmere group has been established in the world of home, garden, and leisure. Bosmere manufactures original ideas and designs that are built to stand the test of time. One mark of their superior quality is that 20 to 30 percent of their business is exported to a world market that demands top quality service, customer support and competitive pricing. Established in North America for over 15 years, Bosmere has been serving the entire country, and also sends wholesale goods to Canada, Central and South America. Part of their focus on outstanding customer service includes products that are attractively packaged, and well presented with informative instructions, diagrams, and photographs. * Made from plastic * Green colored meter * Helps to prevent over watering * Batteries not required * Dimensions: 10L x 2.25W in.