| Room temperature and air humidity were recorded with an Assman psychrometer. |
| A small, accurate sling psychrometer for determining relative humidity is a good investment. |
| The humidity of the air was observed both by August's psychrometer and Saussure's hygrometer. |
| This measurement is a holdover from the use of an instrument called a sling psychrometer. |
| The sling psychrometer may, of course, be used simply as an ordinary sling thermometer. |
| Relative humidity can be checked at the same time with a humidity gauge or psychrometer. |
