Ref. 2075

A 2 ¾” diameter brass aneroid barometer by Negretti & Zambra, number 21164, compensated. Incorporating the white side – Cooks sea level aneroid, patent number 14424; in original gold-plated brass case, in good condition but with signs of wear, and associated leather covered case, in distressed condition but intact. This unusual aneroid barometer has facility by turning the knurled knob at the top, whilst holding the top of the barometer, to adjust for sea level reading, from 0 – 20,000 feet. The engineering concept of this is not great and internally the gear had been changed previously. After some restoration we have now restored this to a fully working condition. An unusual and quite rare collector’s piece.