1. 1613 (x)
  2. 1709 (x)
  3. 1928-09-10 (x)
  4. Search Results

Search Results

(1 - 1 of 1)
Electric quartz-annealing furnace, without cover--close-up view
Title
Electric quartz-annealing furnace, without cover--close-up view
Format
photograph: negative
Date
1928-09-10
Series
Academic Divisions
Description
External diameter, 68″. Fused quartz mirror development.