Chauvin Arnoux CA1227 - Air Flow Funnel & Cone Kit Chauvin Arnoux Sale! from 27700 /per Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. A set of airflow measuring cones 210mm round and 346x346mm square to suit‚ CA1227 anemometer. Tweet