General solid-stem thermometer is used in both work place and house.The technique of silkscreen printing makes the amber figures on it inerasable forever.Ring top,yellow or white back.Measurement can be taken by either total or partial immersion in the medium.

We can also put it in a protective brass or stainless steel case to protect it from breaking.The holes in the lower part make the glass thermometer work same as in practical temperature.Ring top,see picture: