Figure 7 Inside front view Colorimeter Cat no33-29-40 p10
Summary
Figure 7 - Inside front view from Bausch & Lomb Spectronic 20 Colorimeter Cat No. 33-29-40, Reference manual. Rochester, New York: Bausch & Lomb Incorporated, [1962], page 10. Figure caption reads: "FIGURE 7 - INSIDE FRONT VIEW".
Note: The date of 1962 is based on the last two digits of the code on the back cover, "332940-181ND, 600, II-62".
There is no copyright statement in the manual, and no copyright registration renewal for the manual. It is therefore in the public domain in the United States of America.
Tags
history of science
science
science history institute
bausch lomb products and inventions
spectronic 20
ultra high resolution
high resolution
Date
1962
Source
Science History Institute
Link
Copyright info
public domain