An antique Edwardian period Sheraton inlaid mahogany portable thermometer by Negretti & Zambra, C1910. Hinged cover that folds over for surface standing or folds out straight for wall hanging through the brass eyelet. Silvered engraved scale to the mercury action thermometer, bears the makers name to bottom of the scale. Superb quality and condition. Measures 5.25" long x 1.5" wide closed x 9.75" long open x 0.5" deep. Stock number 34224.