Description

Signed “Negretti and Zambra, No.997”, this air flow miner’s meter (anemometer) has seen zero use. Signed and serialised with trade and inspection label to the lid of the mahogany box, it retains ALL of it’s original orange lacquer, 5 subsiduary dials (from hundreds to hundreds of thousands of feet per minute), works flawlessly, needle lock, aluminum vanes (expensive at the time), with post mount which screws into the base. Dial measures 2 1/2 inches, vane surround is 3 1/2 inches, mahogany case is a 4 inch cube with brass latch and carrying handle. Dated 1891. A  better example you will not see for a long time.