Psychrometric hygrometers. (VYT), Zaporizhzhya region.

Hygrometers psychrometric VYT
They are used to measure the relative humidity of the air in the premises.
VYT-1 Measuring range 0...+25 °С(//tractor-service.com)
VYT-2 Measuring range +15...+40 °С
VYT-3 Measurement range +30...+42 °С
A hygrometer is a measuring device designed to determine air humidity.
Thisspecial laboratory equipment is intended not only for creating comfortable conditions for humans. It is also used in some industrial and commercial areas, where many materials: ordinary and filter paper, fabrics, some types of plastics and other substances, as well asvegetables,fruits are recognized as hygroscopic, i.e. change their properties in dry air. They are used in microclimate systems, humidity control of production, warehouse and household premises, control of the composition of protective atmospheres, etc. activities