Multifunctional ruler

Technique: etched copper-foil plastic laminate
Date: 1983
Description: Ruler displaying the face of Nicolaus Copernicus and mathematical formulae made in Toruń leading electronic plant outside normal production at the time of the People’s Republic of Poland (PRL), then under a communist regime
Location: Artur Sikora’s Collection

Nicolaus Copernicus University Library
Gagarina 13
87-100 Toruń
Poland

International Centre for Copernican Studies
Bojarskiego 1
87-100 Toruń
Poland