Sling psychrometers measure the atmospheric humidity. These systems are essential for calibrating hygrometers. Sling psychrometers are available in various sizes ranging from pocketsize models to larger units approximately a foot in length. Sling psychrometers are the standard for accurately measuring ambient temperature and humidity. These psychrometers are used to measure cave air. Sling psychrometers tend to lose accuracy at humidity levels below 20% RH and temperatures below 32oF.

Slip Clutch controls torque for intermittent, continuous or overload slip. It has an adjustable and a wide range of torque. It can be used as torque limiters, tensioning devices and overrun devices. Torque of slip clutch is range from 130 Ncm to 846 Ncm. It is built in Oldham coupling for misalignment applications. It can also prevent a catastrophic rear wheel lockup in case of engine seizure or transmission failure.