This is rare example of an antique explorers pocket altimeter barometer made by the well-known scientific instruments maker Elliott & Bros from London. The silver barometer dial goes from 20-31 inches and the altimeter scale from zero to 12000 feet adjusted by a bezel. The device comes in original leather and wood case. The case has some wear and tear and the locking system has some damage. Dimensions: 50mm diameter and 20 height.