Unusual Advertising Wall Barometer for OXO by Negretti & Zambra c.1930

A very attractive vintage commercial OXO aneroid wall barometer and calendar c.1930. The barometer comprising 3½" printed vitreous glass dial calibrated in inches of mercury with a range from 26in – 31in divided down to 1/50th, standard meteorological terms and "OXO" logogram, blued steel pointer, gilt index and bevelled glass. Standard Vidie pattern movement driven from a single 2¼" capsule tensioned on a C spring. The calendar with double sided day and month cards maintained in oxidised brass channels. All mounted on an attractive French polished walnut board in the form of a lidded container, the centre decorated in red with "OXO" logogram. Condition: The subject of a full service, conservation, and calibration under laboratory conditions, see performance chart from dynamic test. The barometer working acceptably well across the standard barometric range 28in – 31in Hg. Two date cards missing, otherwise days and months present, the cards with ageing and some distress. The timber board retaining much of its original colour and polish, some abrasions and general signs of age. Comments: These days a scarce item, and particularly so in this condition which is good overall. A very collected and attractive piece.