Wall hydrometer
Category
Scientific instruments
Date
Unknown
Materials
Steel, brass, glass
Measurements
100 x 90 x 25 mm
Order this imageCollection
Lanhydrock, Cornwall
NT 883266
Summary
Circular German hygrometer with brass surround and silvered brass dial covered with a convex glass.
Provenance
unknown
Marks and inscriptions
(on face) PERCENTAGE/OF RELATIVE HUMIDITY/HYGROMETER/GERMANY