Hand Thermometer

An Immisch patent doctor's thermometer. S.Maw son & Co. London inscribed on the dial of the thermometer. Circa 1890-1910.
Condition: Wear consistent with age and use.
Dimensions: Boxed Weight 25gm, Length 6cm Width 5.8cm, Height 1.5cm
Unboxed Weight 10g, Length 4cm, Width 2.5cm, Height 1cm