Vintage Chrome Rototherm Dial Temperature Gauge

This is a Vintage Chrome Rototherm Dial Thermometer Gauge with stem. It has an easy to read dial and measures from 10 to 120 ºC.

The Centigrade scale is marked in black with a black pointer on a grey face.

Marked Rototherm, Made in UK, it was made by the British Rototherm Co. Ltd, London, England.

Approximate Dimensions:

• Maximum Depth: 10.5 cm (including the stem)
• Max. Diameter: 6.5cm 

The thermometer is in good cosmetic condition. There are a few surface blemishes commensurate with age and use. 

Please click on the following link for more vintage measuring tools

Bimetallic Thermometer

Rototherm invented the bimetallic thermometer in 1934. The thermometer has a metal pointer that moves up and down a circular scale. The pointer is mounted on a coiled piece of metal called a bimetallic strip. The hotter the temperature, the more the bimetallic strip expands, and the more it pushes the pointer up the scale.