You are here

Home » » Mathematical Treasures - German protractor

Mathematical Treasures - German protractor

Author(s): 
Frank J. Swetz and Victor J. Katz

This Mathematical Treasure was published in May 2008.

Protractor

Brass protractor from about 1700 of German manufacture. Its base plate contains some Baroque decoration. Note its similarity to a present day student protractor.

Index of Mathematical Treasures

Index of Mathematical Objects

 

Frank J. Swetz and Victor J. Katz, "Mathematical Treasures - German protractor," Convergence (January 2011)

Convergence

Mathematical Treasures from the Smith and Plimpton Collections at Columbia University