26.9 MB (1.3 MB compressed)
3788 x 2480 pixels
32.0 x 21.1 cm ⏐ 12.6 x 8.3 in (300dpi)
BRUCE H. FRISCH / SCIENCE PHOTO LIBRARY BRUCE H. FRISCH / SCIENCE PHOTO LIBRARY
Manual grinding of high spots on a mirror blank at the Perkin-Elmer corporation. The contour map projected onto the surface of the mirror blank instructs the engineer where to polish.
Model release not required. Property release not required.