De Khotinsky with ruling engine

Achilles de Khotinsky, at age 77, with a ruling engine he had built for the Physics Department at the University of Michigan., Credit Line: Photograph by Mack, courtesy AIP Emilio Segrè Visual Archives, Crane-Randall Collection
Abstract/Description: Achilles de Khotinsky, at age 77, with a ruling engine he had built for the Physics Department at the University of Michigan.
Subject(s): Eyeglasses
Laboratories
Equipment and supplies
Diffraction gratings
Ann Arbor (Mich.)
DeKhotinsky, Achilles
Date Created: 1927
Credit Line: Photograph by Mack, courtesy AIP Emilio Segrè Visual Archives, Crane-Randall Collection
Catalog ID: DeKhotinsky Achilles F1