ROTOTHERM bakelite cased desk or wall thermometer with 2.5 inch dial, 1930s

This is one of the first Rototherm bimetallic thermometers, introduced following their move to their Merton factory in 1934. Rototherm are still producing top quality measuring instruments today.

This early strut model features a chromed bezel and is designed to be either free-standing or wall-hanging. Aimed at the domestic consumer, it was available in a range of colours and was also favoured by manufacturers as an advertising or promotional gift.

This example is in black (surprisingly one of the rarer colours) with a cream dial. It has been fully disassembled, cleaned and polished and is supplied in excellent condition and full working order (the simple bimetallic movement has been adjusted using 20 degrees C as a datum and is sufficiently accurate to give a good indication of temperature (+/- 1 degree) from 10 to 30 degrees C.

Dial diameter 2.5 inches (63mm); height/width 85mm; depth 40mm

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