Product Details: The Donaldson 1/2-13" UN Connection SLT Fluid Level Sight Gauge with Red Thermometer is designed with a polished chrome finish for superior corrosion resistance and an ergonomic design for comfortable use. It also features a +/- 2 psi accuracy for precise measurements. This gauge is perfect for monitoring fluid levels in a variety of applications. This product boasts a sturdy build and consistent functionality, making it an ideal option for any task. FleetPride is your First Click in Heavy Duty®.