Watts DP IWTG Water Pressure Test Gauge for Garden Hose<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Water pressure test gauge with maximum working pressure of 200 psi^Easily determines incoming water pressure from your garden hose^3/4-Inch female garden hose thread^Can be left on overnight to test for thermal expansion and maximum pressure in the system^Clamshell</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41AkWAf%2B7DL.jpg" noproxy>