Vintage Abbirko / Envit Envivent Electronic Anemometer in Its Original Case With Accessories

This wonderful looking scientific instrument is a 1960s Vintage Abbirko / Envit Envivent Electronic Anemometer in Its Original Case With Accessories. Made by Envit Ltd, Merthyr Tydfil, Mid-Glamorgan, and Abbirko Instruments Ltd.

The polished steel air meter is in very good cosmetic and working condition but I can't attest as to its accuracy. There are a few surface scuffs and scratches commensurate with age and use. 

The small chrome anemometer has 8 vanes and connects to the battery powered Abbirko electronic metre with three scales 0-5, 0-15, 0-1.5 m/sec. 

Approximate Size:

• Anemometer diameter: 6.8cm
• Depth: 4.4 cm
• Height: 12.5 cm (excluding pole)

It comes with a ground pole/rod split into sections which screw together, plug connectors and lead, a carry case and strapping. A correction chart for all three scales is stuck to the inside of the case lid. A very useful instrument for wind/air speed /air flow measurements.

A very high quality measuring instrument for the industrial ephemera and meteorological instrument collector.

Marked:

Abbirko Instruments Ltd

Envit Envivent Anemometer

Patent. Nos. (dating to the 1960s)

U.K 899911 

U.S.A 3175151

Germany 1278744

and other countries

Mechanical anemometers were a piece of safety equipment, invented by Benjamin Biram in 1844, to determine the volume of air entering or exiting mine workings. 

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