Collection Guides
Caltech Images Collection
Scientific Instrument Photographs
open the Protractor collection guide metadata record
Protractor
Title
Protractor
Collection
Caltech Images Collection
Series
Scientific Instrument Photographs
Identifier
ST-PH-17
Extents
1 photographs (negative)
Abstract
In wood and particleboard (?) case. Keuffel and Esser Co., NY.
IIIF Manifest