20th century
Design-Aidor brand translucent plastic protractor / stencil tool, with yellow and blue paint residue.
8.3 × 15.2 cm (3 1/4 × 6 in.)
Collection of Barnett and Annalee Newman Estate of Annalee Newman The Barnett and Annalee Newman Foundation
Photomechanical halftone relief block
20th centuryAmerican