SOLD This excellent example anemometer or medium speed air meter. Was made by well know scientific instruments maker Negretti & Zambra from London and was used to measure the velocity of the air currents in mines, tunnels, public buildings and aviation laboratories. The device is made of brass and aluminium and has a nice silvered dial with fourth scales. On the back of the dial there is a on-and-off and re setting knob for the propeller. Dimensions: the diameter of the dial is 60 mm and the wind propeller's diameter is 70 mm and the wood case is 120 mm X 100 mm X 90 mm. Comes with original instructions paper and calibration information. The original mahogany case is in excellent condition, also comes with a correction card for calibration. The device has some wear and tear due to the age and is missing just a detachable screw-in connector.. The anemometer is still in functioning state.
SOLD
