kurz 441 instruments PFM CFM Hot Wire Thermo-Anemometer

0-6000 FPM range.

comes with probe, case and meter, old rechargeable batteries included.

meter reads partial battery charge.

otherwise completely untested.

web info:

"Hot wire anemometers use a very fine wire (on the order of several micrometers)

heated up to some temperature above the ambient. Air flowing past the wire has a

cooling effect on the wire. As the electrical resistance of most metals is dependent

upon the temperature of the metal (tungsten is a popular choice for hot-wires),

a relationship can be obtained between the resistance of the wire and the flow velocity.[1]

Several ways of implementing this exist, and hot-wire devices can be further classified as CCA

(Constant-Current Anemometer), CVA (Constant-Voltage Anemometer) and CTA (Constant-Temperature Anemometer).

The voltage output from these anemometers is thus the result of some sort of circuit within the device trying

to maintain the specific variable (current, voltage or temperature) constant."

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buyer pays actual shipping cost.

must pay within 7 days, pickup 7 days after payment, or negative feedback.

used items sold as is no warranty, no refunds.

no warranty on laser units, or mechanisms (mechs)

Zero feedback bidders my have their bids canceled, at my discretion.