A Royal National Lifeboat Institution (RNLI) aneroid barometer by the famous makers Dolland.

Zinc casing, hand annotated enamel dial, brass bezel, heavy bevelled plate glass and a gilt tell tale.

Indicated pressure range of 26"-31"

Dolland and the makers Negretti and Zambra were the only two companies deemed of sufficient quality to make these for the RNLI. They started to be sold in 1864.

Measures 16cm diameter x 7cm high.