Identity elements
Reference code
Name and location of repository
Level of description
Item
Title
D105000-4
Date(s)
- 1957-02-28 (Creation)
Extent
Name of creator
(1919-1980)
Content and structure elements
Scope and content
There are printed instructions on the Bausch & Lomb machine that show a technician how to measure "Printing opacity" and "Opacity". He is looking at a small negative or picture with a magnifying glass. Copies of prints are laying next to the machine. Photograph ordered by Merchandising Factors, Seattle.
Machinery; Hand lenses; Testing; Merchandising Factors, Inc. (Seattle);