goldbeater's-skin hygrometer

goldbeater's-skin hygrometer

[′gōl‚bēd·ərz ‚skin hī′gräm·əd·ər]
(engineering)
A hygrometer using goldbeater's skin as the sensitive element; variations in the physical dimensions of the skin caused by its hygroscopic character indicate relative atmospheric humidity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.