For sale, a large Victorian desk thermometer with serpentine stone base by Negretti & ZambraThis fabulous example is comprised of a graduated and turned serpentine stone base with a black ebonised wooden upright stand affixed to the top. The front face sports a superb opaline glass and painted Fahrenheit scale reading 30 to 130 degrees on the right and with various temperature indicators to the right. The crest of the glass scale is painted in red with Negretti & Zambra, London and the company’s N&Z logo can be seen in black to the left handside on the upper scale.The thermometer is also a delight with a wide bore glass cane providing very clear readings and an unusually large tear drop bulb at the base.The combination of opaline glass, a robust thermometer, a black gloss finish to the upstand and the serpentine base makes this a stellar example of its type. The addition of Serpentine also being quite an interesting medium given its relationship to the Royal Family at the t...