Standards PH22.1, —.84, —.85 and —.92 Positive-Negative Raw Stock Dimensions; 16mm Projection Lamps; Enlargement Ratio

On January 8, 1953, the American Standards Association approved four new standards which are published on the following pages.

Print ISSN

0898-042X

Published

1953-01

Content type

Original Research

DOI

10.5594/J01133