Universal BNC Pool Plus pH Probe - Single-Junction - 10 Foot Cable filter-width_10 1/3 inches this pair of Figure 4

this pair of Figure 4 rails have an overall outside diameter of 1

This pair of elegant marine grade Meridian Series Hand Rails easily retrofits into an existing Figure 4 setting

It is compatible with all PT-6000 models

This is a Parker TrueSeal Male Tee Swivel

This is a Hayward Professional Series ORP probe with a 2 foot connection cable for CAT or HCC automated chemical controllers

Universal BNC Pool Plus pH Probe - Single-Junction - 10 Foot Cable filter-width_10 1/3 inches this pair of Figure 4This is a PP100 Universal Pool Plus pH Probe, single junction, with a 10 foot cable. These Sensorex universal probes have BNC connections and are compatible with Strantrol, Polaris, Chemtrol, and Rola Chem controllers. The Pool Plus sensors feature a high molarity reference design for stability, reliability, and maximum service life in demanding pool and spa applications. The Pool Plus probes also feature a Salt Crystal Reference which is a visual