The Twitchell Hydrometer : Notes from the Oesper Collections, No. 28, September/October 2014

A brass hydrometer jar with handle and thermometer and two metal hydrometers probably designed to monitor the fermentation of beer
A brass hydrometer jar with handle and thermometer and two metal hydrometers probably designed to monitor the fermentation of beer.

The 28th issue of Museum Notes highlights yet another scientific instrument produced by the 19th-century Cincinnati inventor Henry Twitchell (1816-1875).

Click here for all other issues of Notes from The Oesper Collections and to explore the Jensen-Thomas Apparatus Collection.