Barometer

Physics

Accession Number: 2009.ph.1

Description:

A disk-shaped instrument with a glass top cover. Under the glass cover is a scale from 0 to 100 with a needle pointer. There are engravings which read “Airguide” and “Percent Relative Humidity”. It is mounted on a black plastic base with a hole to facilitate hanging.

Alternative Name:

Primary Materials: Glass, Metal, Plastic

Markings:

“Made in U.S.A By Airguide Instruments Company Chicago”

Dimensions (cm): Height = 4, Diameter = 13.5

Function: To measure relative humidity.

Condition:

Associated Instruments:

Date of Manufacture: 20th Century

Provenance:

Historical Notes: