Add Yahoo as a preferred source to see more of our stories on Google. A what? A sling psychrometer is a difficult word for a very simple tool. It dates back to the 1700s and is actually still used ...

Dew point can be calculated using the air temperature and a relative humidity value, which is measured using something called a sling psychrometer. A psychrometer is a metal rod, around 6 inches long, ...

An e-mail from Herman asks about an instrument using thermometers to determine humidity and wants to know what it is. It's called a sling psychrometer and consists of two thermometers fastened onto a ...

An e-mail from Gary recalls an instrument using thermometers to determine humidity and wants to know what it is. It's called a sling Psychrometer and consists of two thermometers which are fastened ...

Buildings require various levels of temperature and humidity controls, but when it comes to preserving historical artifacts or performing an operation, the temperature and humidity levels in a space ...