Photograph of a Duboscq - Leitz colorimeter
1 photograph ; 30 x 20 cm.
Copy of a black and white photograph. Shows a Duboscq-Leitz colorimeter manufactured by E. Leitz, Inc. in New York.
MS. COLL. 241 (Best), Box 109, Folder 15
Title based on content of photograph.
Best used this type of colorimeter in his work on the discovery of insulin.