Test for reprographic use; fundamental assembly of typographical characters for legibility tests, test card for practical use in rotary cameras— 2 стр.
Test patterns for micrography; test exposures made to establish the conditions for microfilming of printed documents, literature and newspapers— 2 стр.
Tests for Reprographic Use; DIN-test Assembly (Test Table) for Testing the Microfilming of Technical Drawings; Neutral Density Cards for Use in Practice— 1 стр.
Test patterns for micrography; test exposures made to establish the conditions for microfilming of printed documents, literature and newspapers— 2 стр.