De qué está hecho higrómetro
Measures air humidity.
- Human hair strand — tiene como parte. The length changes with humidity.
- Gauge needle and dial — tiene como parte. It shows the humidity.
- Resorte — tiene como parte. The tension of the hair.
- Madera — está hecho de. Early hygrometers were a wooden frame with a sensitive fibre or hair.
- Fibra vegetal — está hecho de. Humidity was shown by a fibre that changed length.