A clever device to test the alcohol in a finished wine.
For measuring distilled alcohol you 'll need a spirit hydrometer look at the still page!
You put some wine in the funnel and it runs out of the capillary tube and by the magic of surface tension will stop.
You then read off the percentage alcohol. Most accurate between 10 to 20%.
It's not precise but is good fun
For distilled wine you want a spirit hydrometer! Look at the still page.