2.3 M Ceramic Skid Resistant Tile Depth Marker 6 Inch x 6 Inch with 4 Inch Lettering horsepower_1 1/2 HP The clock does require one

The clock does require one AA battery (not included)

These signs have a dry erasable surface for changeable messages including the Lifeguard's name

00 for low chlorine level applications)

and 261142

2.3 M Ceramic Skid Resistant Tile Depth Marker 6 Inch x 6 Inch with 4 Inch Lettering horsepower_1 1/2 HP The clock does require oneThis ceramic pool depth marker is printed with 2. 3 M and has a skid resistant surface. It's overall size is 6 Inch x 6 Inch and has a letter height of 4 Inches This ceramic pool tile is printed with ceramic glaze inks, then kiln fired to ensure the finest, most durable depth and safety marker line available. The skid resistant tile is surfaced in the factory, not sanded or coated, for a more reliable slip resistant surface! Skid resistant tiles are