Maybe a digital hydrometer will be nice. Or anything similar if there is.

I just need something to calculate the relative humidity of a room.

If there is an online Thai web that do delivery. That will be great.

I think you are looking for a hygrometer, not a hydrometer. Any clock shop will probably have them.

Yeah a hygrometer. The instrument that could calculate relative humidity. In any clock shop, for real ?

Yup, simple (and not particularly accurate) digital hygrometers are found in clock shops, usually as part of a clock with temperature, date etc.

If you want a dedicated (and more accurate) unit you may need to hunt harder, eBay is your friend.

Yup, simple (and not particularly accurate) digital hygrometers are found in clock shops, usually as part of a clock with temperature, date etc.

If you want a dedicated (and more accurate) unit you may need to hunt harder, eBay is your friend.

Ah i see. Yeah i just want a simple hygrometer one, will do. Nothing fancy.

Thanks mate