Bristol's, Bristol's Recording Volt Meter, www.lowell.eduwww.lowell.edu
Bristol's recording volt meter
Thermograph
A thermometer that produces a continuous record of a fluctuating temperature.
Microbarograph
Instrument used to continuously record very small changes in atmospheric pressure.
Gauthier, Prontor II camera shutter
The Prontor is a long-lived series of leaf shutters
Arthur Adel/Carl Lampland, Rock Salt Prism in glass dome
From Adel-Lampland 40-inch Spectral radiometer Removed 7/10/1991 by H. Giclas
Bacharach, Tempscribe
Device to record ambient temperatures over periods of time.
Device to record ambient temperature over periods of time.
Pyrheliometer
A pyrheliometer is an instrument for measurement of direct beam solar irradiance.
Lenses for spectrograph
Box of relay lenses for spectrograph
Winding key
Brass key for winding a clock
atom, dcmes-xml, json, omeka-xml, rss2