-30 to 30 PSI Liquid Filled Vacuum/Pressure Gauge - 1/4 Inch Bottom Mount - 2-1/2 Inch Face - Stainless Steel Case watts_500 There are no sharp ridges

There are no sharp ridges protruding out from the edges

The 16 Foot Commercial Frontier III diving board in radiant white with matching white anti-slip treads has a durable acrylic outer body and is designed specifically for moderate use on commercial pools

and System 2 Modular D

This is a Taylor Biguanide Titrating replacement reagent for various Taylor pool water testing kits

-30 to 30 PSI Liquid Filled Vacuum/Pressure Gauge - 1/4 Inch Bottom Mount - 2-1/2 Inch Face - Stainless Steel Case watts_500 There are no sharp ridgesThis is a combination pressure vacuum gauge with a 1 4 inch bottom mount, 2 1 2 inch face and stainless steel case. This swimming pool pressure gauge is designed to read from negative 30 to 30 PSI. It is liquid filled for a more accurate reading. The case is stainless steel and painted black. It has a glass lens with all brass internals. A swimming pool pressure gauge displays the exact pounds per inch (PSI) of your pool filter, which requires some