Spectrohelioscope

Title
Spectrohelioscope
Collection
Caltech Photographs
Series
Photographs of Individuals
Extents
1 photographs
Abstract
Perspective drawing of spectrohelioscope grating box and line shifter. Pencil and Ink on Mt. wilson letterhead stationery, backed with graph paper, 11 x 8.5 inches, unsigned and undated. Porter Papers.
IIIF Manifest