The OBS-TT Series Plastic ‘Tell-Tale' Pressure Gauge is the most accurate pressure gauge available, featuring a distinctive red ‘Tell-Tale' pointer. Constructed with a thermoplastic polypropylene enclosure, these gauges are built to last in corrosive environments.

Each OBS-TT Series gauge is equipped with a ¼” NPT 316SS connection, perfect for pairing with our GO Series Pressure Gauge Guards when working with corrosive chemicals. The gauge guards prevent damage from corrosive substances via an isolator.

Factory pre-filled for accuracy (0.75%), these gauges also feature movable color range tabs (red, yellow, and green), which act as visual indicators for filter or bag change-outs.