{ Twad"dell (?), n., Twad"dell's hy*drom"e*ter (?) }. [After one Twaddell, its inventor.] A form of hydrometer for liquids heavier than water, graduated with an arbitrary scale such that the readings when multiplied by .005 and added to unity give the specific gravity.

{ Twad"dell (?), n., Twad"dell's hy*drom"e*ter (?) }. [After one Twaddell, its inventor.] A form of hydrometer for liquids heavier than water, graduated with an arbitrary scale such that the readings when multiplied by .005 and added to unity give the specific gravity.